Step-Siblings’ Shared Wall

An adult stories – Step-Siblings’ Shared Wall by Ferrish,Ferrish Sadie had always shared a wall with her step-brother Sam.

Her father had died when she was just a baby, and her mother had soon re-married, making John the step-dad that had always seemed like a dad, and Sam the step-brother who had always seemed like a brother. They lived together and had grown up together, and Sadie had even taken John’s surname. To a casual observer, they seemed like an ordinary family living a standard life in a normal house in a regular town. In fact, to any outside observer, nothing would have seemed amiss. This is because the thing that made their family not ordinary was on the inside – specifically, on the inside of Sadie.

Sadie had a secret which she kept locked up tight in the most secure location in her mind. It was the kind of secret that she knew she could never share with anyone, even (especially!) with her own family. But it was also the kind of secret that burned brighter the longer she kept it secret, and ever since she and Sam had turned 18, Sadie had felt this brightness burning harder than ever.

The wall that separated their bedrooms was thin drywall. Sadie knew exactly how thin it was, because their beds abutted it on each side, and Sadie had always been able to hear a good deal of happenings on the other side. Sadie was slightly older than Sam and, in her mind, a lot wiser, so she felt she had been first to realize the importance of keeping certain things quiet in bed. She felt that Sam was the complete opposite, taking no care whatsoever. At first she was disgusted and annoyed at being kept awake, and wanted to storm into Sam’s room, catch him in the act, and tell him off, but she couldn’t muster the confidence and didn’t really want to see him do it anyway.

Over time, Sadie grew to tolerate, and then even to enjoy the nightly rhythmic squeaking noises of Sam’s bed next door. It gave her a sense of power over him, like she knew his secret, and could reveal it any time she wanted. She came to learn his patterns. He would usually do it late at night when he thought everybody else had fallen asleep – another reason for Sadie to keep still and quiet in her own bed. Sometimes Sadie would lie half-asleep, not knowing if perhaps the noises were in her dream. They would usually start as a quiet squeak of mattress springs, proceed rhythmically, and then intensify – sometimes to the point where the bed began knocking slightly against the wall. It was usually at this point that the speed of the rhythm increased – faster and faster, with urgency… until it suddenly stopped, and silence descended for a minute, and then she would hear Sam getting out of bed to go to the bathroom.

At some point along the way, Sadie had begun touching herself at the same time. Part of her was just being practical – the safest time to do it was when there was already noise. She kept her movements to a minimum, usually lying face down and squeezing her fingers between her legs. She hoped that whatever incidental noises she made would be lost in the noise that Sam was making. Occasionally she would mis-time her self-pleasuring, and Sam would finish first. She felt unable to continue at that point, worried that there was nothing going on next door to mask the sounds of her carrying on. A long, frustrating, touchless night would follow.

Eventually Sadie trained herself well enough to hear Sam’s pattern starting, get into position, and finish at the same time as Sam. She even slowed down if she felt she was getting ahead of Sam. She wanted to achieve climax at the exact same moment. Her orgasms became tied to Sam’s. She would visualize what was happening, inches away from her through the wall. Was he doing it under his sheets, or in the open? What would she see if she drilled a little hole through? Did he use a sock, or what?

This was Sadie’s secret: her sex life had become interwoven with her step-brother Sam’s. He knew nothing about it at all, and she could never tell him. Besides the embarrassment, she didn’t want to risk their tacit arrangement coming to an end.

Everything changed the night Sam brought his girlfriend home for the first time. They had met at his 18th birthday party, and were planning to go away to the same college. Sadie was already feeling mixed emotions – on the one hand, proud of Sam for getting into a good school; on the other, sadness that they would no longer share their wall. Sadie was going to a different college. The thought of solid block walls in a strange dorm filled her with trepidation.

Sam had been dating Gracie for a while; they were a perfect match: Gracie’s tall, athletic figure, and Sam’s equally buff physique (Sadie had noticed). Sadie knew it was only a matter of time before they took things to the next level in their relationship. Sam had been spending a lot of time over at Gracie’s; for all Sadie knew, they could have taken it to the next level already.

All doubt was removed the night Gracie came over for a movie & popcorn evening. Sadie’s mom and step-dad were away, so they had stayed up late with the house to themselves. When the movie finished, rather than Sam offering to drive her home as usual, Gracie had announced that she was tired and that they were heading off to bed.

Wait, Sam’s bed?! Sadie thought to herself, almost panicked.

She was taken by surprise at the obviousness of it.

“OK guys, see you in the morning I guess!” said Sadie, trying to work out her next move. All she knew was that she had to be up in her own bed as soon as possible – she didn’t want to miss anything. “I’ll probably head off myself soon, it’s been a long day”.

Sam and Gracie shuffled each other out of the room, not trying to hide their handsiness with each other.

Sadie sat on the sofa staring at the muted TV. She waited 60 seconds, then bolted up the stairs as fast as she could without making a noise, then slipped into her own room and locked the door. She turned off the light, crawled into her bed, and began to listen.

She could hear Gracie giggling. She could hear them move about the room. Gracie seemed a little more switched on to the situation than Sam; Sadie was sure she’d heard her give out a “sssh!”.

It wasn’t long before Sadie heard the sound of bedsprings. She strained to listen for words, but they must have been whispering and trying to keep quiet.

“You don’t have to, Gracie,” said Sam, audibly through the wall. This elicited another “ssssh” from Gracie, and then there were no more words, just the rustling of bedsheets and the irregular squeak of springs.

What were they doing? thought Sadie. This was not a pattern she recognized. There was clearly movement of some sort, but it was… gentler? Less rhythmic, less insistent, perhaps smoother?

Suddenly Sadie heard Sam let out a low moan. What was she doing to him?

The new noises continued, and Sadie’s mind raced as she tried to fit them to what she knew of sexual positions and activity.

Sam moaned again – and then something else. Perhaps a kind of sigh, or sharp exhalation of breath? To Sadie’s comfort, a bedspring rhythm was developing, with familiar building insistency. She slipped a hand under the elastic of her panties, sure she now knew what was happening. Oh Gracie, you slut! she thought as she rubbed herself. Sadie began her usual trick of timing her own rhythm to the sounds she could hear – but it was different this time. Something new. A new feeling came over her… was this… jealousy? Or envy.

Suddenly the rhythmic noise stopped, and she heard the muffled, ruffling sound of someone readjusting their position.

“No, please! Don’t stop!” she heard Sam say.

“Sssh, keep it down, you clutz,” she heard Gracie hiss, and then something whispered and inaudible.

Sadie wondered if Gracie suspected anything. Did she think Sadie was still downstairs, or had she heard her come up to her room? What did she suspect about the thinness of the wall?

More shuffling, and then the return of the rhythmic movements, re-building to their previous pace. Sadie frigged herself furiously now, driven by her imagination of what was happening on the other side of the wall. Was her imagination running away with itself, or did she hear… a wet smacking noise?

It sounded very much like Gracie knew what she was doing. The rhythm was like a metronome – focused, determined, consistent.

Suddenly, she heard Sam let out a muffled groan, and Gracie let out an equally muffled squeal of delight. It sounded like Sam was trying his hardest to stay quiet, perhaps holding a pillow over his head as he grunted uncontrollably.

Soon the noises died down and were replaced by more shuffling.

“Fuuuck,” was all she heard from Sam.

Sadie imagined them snuggling up to each other. She thought she heard whispers, but the wall was sturdy enough to prevent them coming through clearly.

In the novelty of the action, Sadie had mis-timed her own act, and she was left throbbing and unsated. Gentle silent swirls on her nub weren’t enough. She felt she was blocked, and wished they would get back to action next door – but it didn’t happen. Sadie presumed they had fallen asleep. Reluctantly, she did the same.

The next morning, Sadie awoke and sat bolt upright. In her dream, she had been in Sam’s room, watching Gracie go to town on him. She had felt a burning envy at this stranger who had come in and taken Sam away from her and done things for Sam that Sadie never could.

Sadie shook her head and took a swig of water from her bedside table. She pushed those thoughts all the way down.

She changed and left her room to go down and make some breakfast, but found the house empty, and Sam’s car gone. They must have headed back to Gracie’s early, she thought.

Sadie set about making some Saturday morning waffles, thinking to herself. Her loins still burned, unsatisfied. She decided to head back upstairs and finish herself off in peace, now that the other two were gone.

As she headed to her room, she noticed Sam’s door wide open. Normally he was fiercely protective of his privacy and kept it both shut and locked. Sadie decided to indulge herself and take advantage of the situation.

She crept into Sam’s room. There was a certain smell that she didn’t quite recognize. The bed was unmade, there were clothes on the floor and over the chair, and his laptop had been left on. Typical boy, she thought. Sadie looked at the rarely-seen other side of her shared wall and admired it like a it was an old friend.

On the bedside table was a box of tissues, and a bunch of tissues in the nearby wastebasket. An awful, terrible, naughty thought crossed her mind. She reached into the basket, gingerly removed one of the scrunched-up tissues, and gave it a sniff. There was something about it… something familiar. It was still slightly sticky – a clear colorless stickiness. She picked up another of the used tissues. This one she couldn’t identify. Something that smelled a little like… bleach, perhaps? Her mind raced. Had Gracie wiped herself? Had she spat? Sadie felt an illicit thrill run through her veins. To her own surprise, she felt compelled to bring the second tissue closer, for a deeper sniff. She ran the wetness across her lips, then licked. Salty, she mused.

Just then, Sam’s car came up the driveway.

Damn thought Sadie, tossing the tissues back in the bin and tiptoeing out of the room. She hurried back downstairs and resumed making breakfast just as Sam came in through the door.

“What’s cookin’ sis?” he shouted.

“I’m making your favorite – vanilla waffles!” she shouted back.

Sadie gave her lips an extra lick, paranoid that anything might still be on them.

Sam came into the room.

“You’re so awesome!” said Sam, coming over to give her a rough-and-tumble hug. Sadie’s heart skipped a beat, and she awkwardly hugged back, worried that her little trip into Sam’s room might have left some kind of evidence on her, somehow.

“I am, aren’t I?” replied Sadie with a smile. “You’re gonna miss this off at college. Sure you don’t want to change your mind?”

“Are you kidding Sade?” said Sam, “This is everything I’ve always wanted – I mean, don’t get me wrong, I love your waffles, but come on, I’ve got to take that next step. Besides, Gracie’s going, and I can’t be without her. She’s awesome too y’know?”

I bet she is thought Sadie, with a little bitterness.

“Yeah, I guess,” she responded diplomatically. “You seemed to be getting on great last night at least.”

Sam didn’t answer for a moment.

Shit, did I just give something away? thought Sadie.

“Uh, sure, I mean, we’re going steady now,” he responded.

I wonder how long that’s been going on for, she thought.

Sadie served breakfast and they ate together at the kitchen table while catching up on their messages.

“You know there’s a scholarship on offer that I think I could ace?” said Sam. “I’m going to go write up my application OK?”

Sadie gave a disinterested uh-huh and let him go. She had a part-time job later that afternoon and was about to head off herself. She worried that she had divulged part of her secret. Was Sam going to be more cautious now if he thought he was being monitored? Oh god, was Sam even going to carry on his regular sessions at all if he had Gracie to do it for him now? Sadie wore a concerned look.

She finished up and left the house, still carrying the buzz of interrupted un-satisfaction that she could no longer do anything about.

That evening, Sadie got home to find Sam still at work in his room. She was tired and wasn’t hungry.

“Sam, I’m not eating anything tonight. You can go microwave a hotdog or whatever if you like,” she called to him through his door.

She heard Sam get up and rustle for a bit, then came over to open his door and poke his head out.

“You sure? You not feeling well or something?” he asked.

“No, I’m fine, it’s just… it’s been a long day and I had a late lunch with the office girls,” she said.

“Sure, OK. I’ll go down and sort myself out,” he responded. “Just give me a second OK?”

Despite her own fuzzy head, she thought something seemed off about Sam. Was it just her imagination, or were his cheeks flushed?

She went into her room, closed the door, and flopped onto her bed.

This bitch Gracie… she thought to herself, protectively, but aimlessly.

She soon heard Sam head out of his room and go downstairs, presumably to make himself dinner. This is my chance, finally, she thought to herself. She rolled into her usual prone position and pushed both hands down into her panties.

What did you do with my step-bro, Gracie? she thought to herself, angrily, as she rubbed herself hard.

Why are you seducing him like this? she continued, slipping a finger inside.

I swear, if you are taking advantage of him in any way, Gracie… she imagined, as she pressed into her clit firmly.

He’s not that kind of boy Gracie, you slut! thought Sadie, feeling anger and resentment and horniness well up inside her in unison.

He’s powerless to resist, Gracie, you must know that! What did you do to him last night, Gracie? Did you suck him? she thought to herself, wildly rubbing her sopping pussy.

Is that what you did, Gracie? Did you have his cock in your mouth, you whore?! she said to herself, desperately, rocking her hips in time with her hands now, feeling her wetness seep through her fingers and into her panties.

And did you try to keep him quiet, so I couldn’t hear? Did you know I was listening Gracie? Did you?! You tried to keep my own fucking brother quiet while you sucked his fucking dick, Gracie? You only took your mouth off him for long enough to shush him and keep me from hearing him? Is that who you are Gracie? A cock-sucking bitch, shutting me out! It’s my fucking house, my fucking wall, Gracie! And he’s my fucking brother, Gracie! You hear that? He’s mine! she ranted deliriously to herself as her engorged clit slipped between her fingers and she squeezed her legs together.

Sadie was rocking herself mindlessly up and down, lost in a fantasy of vengeance and arousal.

“Fuck!” she cried audibly as she came, finally releasing more than a day’s worth of pent-up frustration, and shuddering into her mattress, waves of pleasure emanating from her clitoris as she crushed it beneath her fingers.

She gave out a deep breath into her pillow.

I needed that, she thought to herself.

“Sadie, are you OK?” Sam called through the wall.

Ohmygod… she thought. How long has he been back in his room?

“Yeah, I just, uh, stubbed my toe,” she lied. That was the best she could come up with.

“You need a band aid?” he called back.

“No, no… I’m fine. It’s fine,” she replied.

She sat on her bed replaying the last few moments. How much had he heard? She hadn’t been taking care to stay quiet at all. She had been lost in this stupid hatred of Gracie. Why did she hate Gracie anyway? Sadie felt ashamed.

She got up and changed into some fresh panties, then wiped her fingers down and tried to freshen herself up for bed. She sat at her dresser, brushing her hair, looking at herself in the mirror, wondering who this person was that had been thinking those awful things over on the bed.

It’s really none of my business, she thought, guiltily. He’s an adult now, he can see who he likes, he can sleep with who he likes… he can get… sucked off by who he likes…

Her thought trailed off as she once again got caught up in the vision of Gracie going down on Sam. She licked her lips and recalled the taste from the tissue. In her imaginings, she saw Gracie bobbing up and down on Sam’s hard dick, like a succubus. The scene was vivid in her mind, and she began to feel her nipples re-harden. The Gracie in her vision was suckling at the tip of Sam’s erection now, tasting his pre-cum. And now it was Sadie herself, tasting it on her lips as she took his length into her own mouth…

No! she cut herself off, standing upright. No, it’s wrong.

She put the hairbrush down, but as she did so, she was surprised by a noise coming through the wall. A familiar noise… a familiar rhythm…

He’s doing it right now! she realized.

It was earlier than usual, but nobody else was in the house, so Sadie thought he must have just had a long day working on his statement and needed a bit of release. Her imagination ran wild, fuelled by the vision she had had of Gracie… and of herself.

She crept back into bed, and began once again to touch herself, following her usual pattern. Sam was getting into the swing of things, by the sounds of it. She increased her pace, buoyed by her own recent orgasm. She felt good. She was back in the pattern. Sam touching himself, and Sadie touching herself – together again.

Sam let out an audible deep sigh.

This wasn’t the pattern.

Sam never usually made sounds on his own. And now, just moments after speaking to her through the wall? Surely he would now be perfectly aware that Sadie was right there, and perfectly aware of what level of sound was audible? How much had he heard earlier? Sadie rubbed faster at the thought, and something caused her to loosen up her caution a little. This was off-pattern too. She caressed her slickening vagina according to the pace it demanded, without regard for her own bedsprings. She suddenly found herself face to face with a new exhibitionist streak in herself. Every time her thoughts turned to the noises she was making, and the possibility of Sam hearing, her crotch throbbed.

“Unnnghh,” she exhaled, and a moment later Sam replied with his own short grunt.

Was he now… aware? she thought, not stopping her fingers. The idea gave her a surge of arousal and she felt her orgasm approaching.

His bedframe was now rattling, more than usual. She rubbed harder and rattled hers back.

In her mind’s eye, she could see him on his back, cock pointed to the ceiling, tip between his fingers. Eyes rolled back, lost in his own fantasy. A fantasy of what? Of masturbating inches away from his own sister with nothing but sheet rock between us?

She wondered where he would cum. Presumably he used tissues – but was that for wiping himself down afterwards, or did he shoot straight into them? Like he shot into Gracie’s fucking bitch throat.

Sadie had two fingers in her pussy now, and a knuckle pressing her clit. Her fantasies began to re-ignite as she edged herself closer, imagining Sam approaching his own peak of ecstasy. The noises coming through the wall were now undeniable.

Sadie couldn’t help herself. There was no holding back any longer. Her second orgasm of the evening unrolled over her in a wave, and she let out a series of impassioned exhalations muffled only by her pillow. As she pulsated and writhed on her fingers, she felt and heard Sam cumming, both through the obvious noises, and the juddering of his bedframe. She pulled one hand up and held it against the wall, in a futile attempt to channel some of the vibration into her own body.

She descended back to reality and began breathing normally. Is he now lying there with a handful of cum? she thought. Sure enough, she heard the familiar ruffling sound of Sam sitting up. What’s he doing now? Is this the point where he wipes the cum up with the tissue? she thought. She longed to be able to see Sam and observe exactly what he was doing. There was no doubt in her mind that Sam knew exactly what she had been doing. Does that turn him on?

Sam and Sadie both kept quiet and drifted to sleep. She dreamed of Sam’s dick.

Sadie woke to sunlight and the sound of the shower in the bathroom. She started to get herself freshened up, but had a devilish thought and decided to go downstairs in her pyjamas and still in her damp panties. She sat reading the news at the kitchen table, munching idly on some dry cereal, waiting for Sam to get dressed and come downstairs.

“Hey Gracie,” said Sam, appearing at the door.

“Hi,” responded Sadie.

Neither said anything else. Trying to look nonchalant, Sam went to fetch himself some cereal, and sat down opposite Sadie.

They ate in silence, looking into their phones, avoiding eye contact.

“So, uh, I’m heading over to Gracie’s later, so I’ll probably see you tomorrow?” he offered, finally.

It was like a stab to the heart to Sadie.

No way, bitch. You’re not having him.

She was shocked at her own thoughts.

“Oh, OK. You’ll be… staying the night then?” she asked.

“Yeah, I think so,” said Sam.

“You only think so?” responded Sadie.

“Well, yeah. I mean, it’s not a date or anything. We’re just hanging out. If she wants me to stay, I’ll stay.” said Sam, matter-of-factly.

Sadie’s protectiveness took over.

“And what if she doesn’t want you to stay? She the type to leave you high and dry?” she said, taking a bold step. They never talked about sex.

“Jeez, Sadie, that’s between me and Gracie, OK?” said Sam through reddening cheeks.

“Oh, sure, of course, of course. I don’t mean to pry. It’s just… there’s something about Gracie that I don’t like. There, I’ve said it. I just don’t want you to get hurt,” said Sadie, sharing just a little of the truth.

“What the fuck? What’s wrong with Gracie? She’s smart, she’s beautiful, we… well… we’re a great fit!” said Sam, defensively.

Sadie let out a sigh.

“I don’t know! Call it female intuition, call it a sixth sense, call it jealousy…” she started.

Shit, did I just say jealousy? she thought, trying to find a way to back out.

“I mean, we’re both about to leave home for college. What I meant to say is, there’s not a lot of time left for us to just hang out like old times. You’ll get 24/7 Gracie at college, so why’ve you got to spend all your time hanging out with her at home too?” she said, only partly convinced of the explanation herself.

Sam took it in, and gave what seemed to be a look of understanding.

“Look, I get it, and I’m sorry. We should plan something fun as a sendoff,” he said. “But Gracie’s my girlfriend! It’s pretty much expected that we spend a bunch of time hanging out, and we need some alone time, y’know.”

What did he mean by that? Did he know he wasn’t alone last time Gracie was over? she thought.

“Yeah, damn right you do,” said Sadie carelessly.

“Come on, we’re adults now, there is zero wrong with wanting a bit of space to ourselves in private,” said Sam. “Her parents are away too, so it just makes sense to go over there where we can just be a couple without…”

He trailed off.

“Without what?” probed Sadie.

“Without… look, do I need to spell it out?” he deflected.

“Go on…” said Sadie, pushing another boundary.

Sam threw up his hands.

“OK, we just want to be able to fuck without my sister on the other side of the wall. Got it?” he said confidently, but with a hint of something else.

Ah, so you’re fucking him are you, Gracie? Not just blow & go huh? Sadie deduced.

“Whatever, I don’t really care,” said Sadie. “Like you said, we’re adults. Do whatever you like, you don’t need to worry about me. Really doesn’t bother me what you get up to on your side.”

Sam gave her a look as though he were re-assessing something.

“Good, I’m glad, and for the record, you can do whatever you like on your side,” he said.

“Don’t worry, I do and I will,” said Sadie with a hint of mock stuffiness.

“Maybe I’ll bring Gracie back here tonight then,” said Sam, testing the water.

Don’t you fucking dare bring that bitch back here, thought Sadie.

“Sure, that would be great, I’d love to hear her again tonight!” she said.

Sadie knew she’d said hear.

Sam was at his comfort limit.

“Whatever,” he said, standing up awkwardly. “It’s my house too.”

Sadie watched him leave the room. Why is he walking like that? Is he trying to hide something? she thought.

She soon heard the sound of Sam’s car, and like that, he was gone.

Sadie felt that conversation could have gone better. She hadn’t meant to be confrontational. It seemed like she had driven him away, which was the last thing she wanted.

Sadie spent a contemplative afternoon back at her weekend job, then came home and retired to her room to read a book. It was getting late, and she felt a little down.

Suddenly, she heard keys jangling at the front door. A familiar giggle echoed up the hall and grated against Sadie’s ears.

Holy cow, he followed through and brought her home after all!

She heard the clink of glasses and mumbles from downstairs. They spent a good long while watching TV and evidently getting through a bottle or two, because by the time Sadie heard footsteps coming up the stairs, they were the rolling, lolling footsteps of a pair of young lovers under the influence.

Sadie heard them come down the corridor and go into Sam’s room, both of them giggling now. She heard them collapse down on the bed and mumble inaudible words to each other.

Amidst the careless noise Sadie heard “She’s right there!” from Gracie.

“I don’t care,” said Sam, through the wall.

More mumbling. More shuffling. A big bounce on the bed, then another.

Sadie’s naughty streak took over. Instead of doing what she expected herself to do (which was to dive down onto her bed and get off to the sounds of drunk lovemaking), she crept out of her room.

Sure enough, she had heard right. Sam’s door hadn’t been closed properly. In fact, it was open a good wedge, and the light from the room spilled out into the dark hallway.

Sadie took up a position in the darkness where she could see right in. Gracie was lying on top of Sam, fully clothed. They were kissing and dry humping. Sadie’s fingers found their usual target beneath her pyjamas.

Sam reached around and placed his hands on Gracie’s buttocks, massaging them, squeezing them through her tight leggings. Sadie felt the sting of envy as she watched Gracie get felt up.

Sam suddenly sat up and started to pull his shirt off. Sadie froze, not knowing whether Sam could see her through the doorway, or if he was even in any fit state to notice. It seemed not, as he continued disrobing, and Gracie did the same, throwing off her top and undoing her bra to reveal a her bare back to Sadie, and her breasts to Sam.

“Oh fuck yeah,” said Sam, taking in the sight as Gracie sat on top of him and started to grind on him. He reached down and unbuckled his belt, and Gracie helped him pull the rest of his clothes off, revealing his cock for the first time to Sadie’s eyes.

It stood fully to attention, at least seven inches, and throbbed with teenage hardness. To Sadie, it was everything she had imagined. She could even see a little wetness at the end. He lay back and let Gracie do the work. She took everything off Sam, even his socks, and then finished stripping her own clothes until she was butt naked too, standing by the side of the bed.

Sadie had to admit, Gracie had an incredible body. She could see why Sam was like putty in her fingers.

Gracie moved into position to give Sam a suck on the tip of his penis.

“Oh yeah, don’t stop that,” moaned Sam. Gracie climbed onto the bed and went down on him. Sadie couldn’t see from this angle. All she got was Sam’s feet spread apart, with Gracie kneeling between them, sticking her ass up. It was a fine ass, and Sadie ground her clit between her fingertips as she watched Gracie deliver an implied blowjob.

Damn, even here I can’t see what’s happening, thought Sadie, desperate to see more of the show.

Fortunately for Sadie’s lust, Gracie pulled up and scooted up the bed so that she could plant her lips on Sam’s and begin to line up his cock with her pussy. Finally Sadie had a view of the action. Gracie sank her slick and neatly trimmed pussy down onto Sam and began to fuck herself on him. They settled into a rhythm and Sadie noticed the bedframe banging against the wall. They were taking no precautions whatsoever.

Sadie couldn’t believe her eyes. Finally, after all this time, she had her sights on Sam’s cock. It was beautiful. It was everything she had imagined, dreamed of… and lusted after. She recognized that in herself now, as she watched it plunge into his girlfriend’s pussy. Sadie was close to losing control as she slipped her fingers inside herself. She was wetter than she could ever recall being.

Gracie moved up and down on Sam with athletic libido, getting herself off against his thick, long cock which stretched her pussy lips out. Sadie was lost in the view, her mind completely absent, serving only her own lust.

Suddenly the show came to a pause. Gracie stopped.

“We can’t do it like this. I’m not on the pill,” she said to Sam.

“Fuck it, get the morning after pill, you can’t leave me hanging like this!” he said.

“I’ve got a better idea,” said Gracie.

She lifted herself up off Sam’s cock with a pop, and turned around, placing her knees either side of Sam’s shoulders. She planted her pussy down on Sam’s face with a wet splat, and held his cock between her hands, sizing him up and preparing for a sixty-nine.

Gracie opened her mouth wide, and started groaning as Sam worked her clit with his tongue. She threw back her head and at that moment faced towards the door.

She made eye contact with Sadie through the crack in the door. At first, a look of shock and surprise came across Gracie’s face, but soon gave way to a wicked grin. She winked at Sadie and plunged down onto Sam’s dick, sucking him with wild abandon. This time, Sadie got a perfect view of everything. Sam’s shaft disappearing into Gracie’s mouth, his balls splayed out on display. Sadie should have been in heaven, but she was frozen from having been spotted.

Did she really see me? Was I imagining that wink? Sadie thought.

“Oh fuck yes, lick my cunt out,” said Gracie as she came up for air. She began circling the tip of Sam’s cock with her tongue, and looked up again at Sadie. She held eye contact as her tongue continued.

She’s fucking teasing me, thought Sadie.

Sadie wondered if Gracie could taste her own pussy juices on Sam’s cock, or whether Sam could taste his own juices on Gracie’s pussy.

Gracie pulled up, spat on Sam’s cock, and began massaging the tip between her fingers. She then dived her mouth back onto it and began deep sucks, still never breaking eye contact with Sadie. Gracie’s expression was one of contorted pleasure, as she wriggled on Sam’s face.

Sadie could only gawp and rub.

Gracie then did the unthinkable. Balancing herself on one hand, she extended her other hand and beckoned to Sadie. She popped Sam’s cock out for long enough to mouth come on to Sadie, and give her an expectant look.

Sadie’s mind exploded. What was Gracie suggesting?!

Gracie looked down at Sam’s cock and up at Sadie, inviting her to share.

Sadie’s animal brain was in control. Never mind that this was her step-brother. She had desperate needs. Slithering forward in silence, she crept through the doorway and approached the bottom of the bed.

Sam was busy, with his face buried in Gracie’s pussy. Gracie held Sam’s cock by the base and pointed it down, towards Sadie.

With every step forward feeling like a fall off a forbidden cliff, Sadie managed to move up silently onto the bottom of the bed, kneeling on the frame and holding on to the side so as not to alert Sam to her weight on the mattress.

Gracie gave her wicked smile and offered Sam’s throbbing, straining, dripping cock to Sadie. It was the most beautiful thing Sadie had ever seen. It awakened a hunger within her.

Sadie couldn’t believe what she was doing. My own step-brother! My own step-brother whose nightly masturbation sessions I get off to! she thought.

She crossed the point of no return, and flicked out a tongue to touch Sam’s dick on the underside. She wondered if Sam would be able to tell from the angle that something was up. She suspected he was oblivious, either drunk on alcohol, or drunk on a faceful of pussy. Gracie beamed and settled back to fully focus on Sam’s cunnilingus, leaving his dick to Sadie.

Sadie’s tongue slid up, wrapping around the tip, and she then dived onto it, taking her step-brother’s dick into her mouth for the first time. She was now truly in heaven. She began to suck voraciously, tasting and feeling everything. It was all she could do to avoid grasping for his balls. Instead, she focused on the blowjob, pleasuring her bro anonymously and with gusto.

Gracie was doing her bit to help, keeping Sam fully pinned down by the head. If Sam could see anything at all, it would be only Gracie’s virgin asshole. She ground her crotch back into his face, enjoying his probing tongue, and moving in time as it slipped over her clit.

Sadie was lost in cock. Sam’s cock. Finally. Her hands propping her up weren’t available to rub herself, but she didn’t care any more. This was all she needed.

Sam started bucking his hips as he got closer. Sadie knew this rhythm. She had the timing down perfectly. She knew the speed, and could match it with precision. She felt like her long and attentive career of masturbatory listening had made her an expert in Sam’s orgasms, entirely without his knowledge. She put her skills to good use. Sam couldn’t hold it in any longer. Sadie sucked to the rhythm as Sam unloaded into her mouth, spurting forth thick ropes of cum, splashing against her tongue. It was more than she had anticipated, and she couldn’t help but let some dribble out and down his shaft. He moaned into Gracie’s pussy, which was all the trigger she needed to cum on his face. As the last pulses of semen left Sam’s cock, Sadie pulled back, and with lightning speed withdrew from the bed and scuttled out of the room. Gracie began sucking him again to clean him off, and to keep up the pretence that it had been her all along. They settled into a slow undulation as they licked each other’s intimate regions clean.

Sadie watched their comedown from the darkness. She decided she had better disappear, so hurried back to her room. She still had a mouthful of cum.

What am I supposed to do with this? she thought for a moment, but didn’t have to think long. She took a deep breath and swallowed, then smacked her lips and breathed in the salty delicious taste through her mouth and nose.

I finally got you, Sam, she thought as she collapsed back onto her bed, letting the smell and taste of her step-brother’s semen fill her senses. And you’ll never know.

At least, that’s what she thought.