My Girlfriend and I Have Sex in Front of Her Sister by superwriter1337

My Girlfriend and I Have Sex in Front of Her Sister by superwriter1337

My name is Alex. I was hanging out with my girlfriend Brittany and her little sister Melanie one night when things got a little interesting… , Author’s Note: This story is heavily inspired by my other series, Exhibitionist Sister.

My name is Alex. It was a Friday night, and I was sitting in the basement of my girlfriend’s parents’ house. My girlfriend, whose name is Brittany, sat next to me on a couch to my left while her slightly-younger sister Melanie sat across from us on a different couch.

“Can you go get me a water bottle from the fridge?” Melanie asked.

“Me too, please,” Brittany said.

“What do I get in return?” I joked sarcastically.

As I was standing up, Melanie said, “I’ll flash you my tits!” She immediately turned red and started laughing hard.

Brittany just rolled her eyes and smirked.

“Oh really?” I said suspiciously. I was still speaking with a playful tone.

I gave Brittany a look. She just shrugged and nodded. To me, that meant she didn’t care

one way or another if Melanie flashed me her tits. And that didn’t really surprise me. Brittany

was fairly liberal when it came to nudity. Melanie looked at Brittany, who gave her sister the same shrug and look that she had given me.

“I was joking,” Melanie said hesitantly. “But if that’s what I have to do, then I’d do it. They’re just tits.”

I turned and faced her, crossing my arms. “Just tits, huh?” Brittany has lovely boobs — big and round with perfect nipples. I could tell that Melanie’s were big too, but obviously I’d never had the fortune of seeing them in anything less than a swimsuit.

“Yeah,” Melanie shrugged. “So do we have a deal?”

I briefly glanced back at Brittany, who just shrugged and nodded again.

“Yes, we have a deal,” I said, trying to sound confident.

“Do you wanna see now or when you get back?” Melanie asked.

“Money up front,” I said, causing both Brittany and Melanie to laugh.

“Fair enough,” Melanie said. She grabbed the bottom of her shirt and pulled it up slowly, hooking her fingers into her bra on the way up. She quickly pulled both her shirt and her bra the rest of the way up, revealing to her sister and I her tits.

“Holy shit,” I said. They were big — about the same size as Brittany’s. Both girls had cute nipples — not too big, not too small. Melanie’s were very obviously hard. Perhaps she was getting a kick out of showing herself off? After all, she certainly had something worth showing off, that’s for damn sure.

“Goddamn Melanie,” Brittany said, nodding with approval. “You’ve got a nice rack.”

“Thanks sis,” Melanie said with a smile. She held her shirt and bra up for a while, giving me a good look. I was definitely committing this to memory for the next time I jacked off.

“Have you gotten your fill yet, Alex?” she asked me, still smiling and blushing. Her tits were surprisingly perky given their size. I would’ve loved to squeeze them, but that wasn’t part of the deal. Honestly, just the fact that I was ogling my girlfriend’s sister’s tits was downright shocking.

“I could look at your tits all night,” I said, sighing. Perhaps that was a bit much, but I really don’t think it was too out of line. I mean, Melanie flashed me her tits, and Brittany had given permission after all. “But I suppose you’ve now held up your end of the deal. You have really nice boobs, Melanie.”

“Thank you,” she said cheerfully. She pulled her bra and shirt back down, adjusting them slightly as she did so.

I quickly turned and went to grab waters — I was just gonna grab one for everybody. By the time I got to the fridge, my dick was fully erect. I sighed. There was no use in trying to get rid of my boner unless I jerked off, and I wasn’t gonna do that right now. If Melanie could show me her tits, then she could handle the fact that I had a boner. Besides, she’d only see the tent in my pants, not my actual dick.

I walked back with the bottles of water in hand. As soon as I came into view, Melanie began to giggle. Brittany looked back towards me and cracked a smile.

“Jesus Christ, Alex,” Brittnay laughed.

“What?” I said, shrugging. “Did you guys not expect this?”

“Well, I did,” Brittnay giggled. “I don’t know if you did though, Melanie.”

Melanie was blushing. “That’s from me?”

“What else could it be from?” I asked, handing Brittnay her water bottle and then Melanie hers.

“I don’t know. Good point,” she said, giggling. “That’s very flattering.”

“I wasn’t lying when I said you have gorgeous tits.”

“Thank you,” she blushed.

I sat down next to Brittnay, making no effort to conceal my erection. My dick was angled down my left leg, but it was trying its damnedest to free itself from my pants. That is to say the tent was quite large. My dick was above average — maybe a hair under 6.5” — and I was relatively thick too.

Melanie was trying not to stare, but she was fairly unsuccessful in this endeavor.

Brittany smiled and rolled her eyes. “Just look at it if you want to look at it,” she said, laughing. “You aren’t fooling anybody.”

“Okay,” Melanie blushed. “I just didn’t know if you’d care.”

“I don’t,” Brittany said, still laughing.

“It looks big,” Melanie said bashfully. “Is it?”

“Just about six-and-a-half inches,” I shrugged. “Which is above average so yes, technically.”

“He’s pretty thick too,” Brittany grinned. She could tell that her sister was dying to see my dick, and my liberal-when-it-comes-to-nudity girlfriend apparently didn’t see the harm in letting Melanie get what she wanted. “Y’know, Alex, if it’s uncomfortable being so hard in your jeans, feel free to, you know, make yourself more comfortable. Plus I can tell Melanie here is itching to see it.”

Melanie inhaled sharply — probably in anticipation of potentially seeing my erect dick, and then giggled, presumably from embarrassment.

“Good God, Melanie” Brittany said, laughing. “You must really need to get laid or something.”

“I mean, yeah, kinda,” Melanie said sheepishly. Brittany just smiled and rolled her eyes.

“Are you sure?” I asked Brittany. I had no problem taking my hard cock out right now, but I didn’t want this to cause problems. Melanie was Brittany’s younger sister, after all.

“Yeah, who cares?” Brittany shrugged.

“Alright,” I said. I stood up and unbuttoned my jeans. I unzipped them and pulled them down, kicking them off my feet. There was now just a big tent in my boxer briefs, which did significantly less to conceal the exact anatomy of my very hard dick.

“Wow,” Melanie said softly. She could definitely see the outline of my cockhead pressed against the fabric of my boxer briefs. I could tell this only made her desire to see the real thing more intense.

I looked at Brittany one last time, who once again smiled and nodded. I hooked my thumbs into the waistband of my boxer briefs and pulled them down, springing my erection free. It swung out and up, bobbing up and down a little before coming to a rest pointing straight forward.

Melanie stared at it hungrily.

“See?” Brittnay said. “He’s got a big dick.”

I turned to the side a bit, causing my dick to once again bounce back and forth. I was showing Melanie a view from the side with my balls hanging down below my dick. I was lucky to have shaved yesterday. My ballsack was hairless and the rest of my pubes looked very well-maintained. I’ll admit it didn’t always look like this, but it did now and that’s what counts. I looked at Melanie’s face and I could tell she was loving the little show I was giving her — letting her see my hard dick from a bunch of angles.

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