“Owww,” I said, taken by surprise.
“Ha ha,” she laughed, “now what do you say?”
Actually, I couldn’t say much as she had me pinned hard against her firm breasts, and even breathing was difficult. My arms had flopped to either side of her but were trapped the wrong way up.
I wasn’t going to let her get away with that, so shifting my weight with my knees and moving my hips, I positioned my cock right along where I thought under her leggings must be her pussy lips and began to slowly and deliberately dry-hump her.
I felt her body twitch underneath me and I am sure a quiet groan escaped her lips.
She wasn’t making any attempt to escape, on the contrary, she seemed to be starting to enjoy what I was doing and although this hadn’t started out to be sexual in any way, it was rapidly heading that way.
As my cock sawed back and forth along the junction of her legs, I gradually felt a reciprocal action. She was definitely rubbing herself against me. I was actually enjoying the feeling on my cock and the knowledge that this was my sister, just seemed to make it even more erotic.
She loosened the grip on my neck, and I was able to turn my head sideways into a more comfortable position, pressing in-between her breasts. There didn’t seem to be any hard clothing there, so I quickly surmised that she wasn’t wearing a bra under her soft jogging top.
I managed to rotate my arms so that I could lift myself up on my elbows and look at her face.
I could now see her flushed cheeks and that she was breathing more heavily through her slightly open mouth.
“This has really turned strange,” I said quietly, still humping her slowly.
“It has,” she replied, in a whisper, taking her arms from around my neck entirely and letting them lie alongside her body on the sofa.
“Shouldn’t we…ummm…stop then?”
“Are you saying you want to?” she asked, her blue eyes piercing mine now, a look of possible victory in them.
“I was just, well, asking how you feel,” I said.
“I think I feel I am winning,” she replied, turning her mouth into a grin.
“If that’s what you are thinking, you’re mistaken, ‘cos I’m not the one going to call a halt just yet,” I said.
“Hmmm, ok, it’s your choice,” she said, putting the ball back into my court.
I wondered what more I could do that might give me the upper hand and make her consider it had gone far enough for her to stop the game, but with us now moving together in a very sexual way, I could only think of one thing.
Lifting one hand, I placed it squarely on her breast and cupped it through her top.
That got a reaction.
“Hey what are you doing?” she said, much louder than a whisper.
“Making my own rules, like you did.”
“It didn’t involve touching each other’s bits though,” she said.
“Too much for you, is it?” I asked, challengingly.
I could see her struggling for a smart retort, but couldn’t find one, especially when my fingers found evidence of a hard nipple through her clothes and teased it with my thumb and finger.
“Ohhh,” she sighed, and increased the pressure of her pelvis against mine. “That’s really bad, you shouldn’t be doing that.”
“Bad or good?” I asked, sensing that she was getting more excited by the minute.
“Oh God, both,” she said, quietly, and made no effort to stop me.
I continued to run my hand over both her breasts, stopping occasionally to feel for a nipple and give it a quick squeeze. She in turn continued to move her hips against me, stimulating me even more.
I moved my head and tried to find a nipple with my lips, but the material was a bit too thick, and I was unable to get a grip and just got a mouth full of material.
I saw the answer high up on her neck; it was the tag for the zipper that ran all the way down the front of her jogging top.
However, I was in a quandary. I let the options run around in my brain, while all the time, with Julie’s movements, my cock was pressing and rubbing against her covered pussy, and she showed no sign of calling a halt.
My thoughts went like this…if I attempted to pull the zip down and encountered bare flesh, it would be a serious line crossed. Would she even let me? We still seemed to be playing the game of who would call a halt first. Perhaps if I tried and she objected, she would call a halt and I would win. If she didn’t then I would perhaps be seeing and touching her bare breasts for the first time. In my current state of arousal, that sounded like a ‘win, win’ situation to me, even though I knew it was my sister underneath me. I couldn’t see a reason not to try and see what happened, we were both in uncharted territory.
Without further self debate, I reached for the tag of the zip and pulled on it. At first it only moved a little and I didn’t think Julie knew what was happening. Then, as it opened more, and she felt the cooler air on her skin, her eyes that had been half closed, shot open.
“What? What are you doing?” she said, loudly, moving one of her hands to press on the zip, stopping it going down further.
“I’m seeing if it’s time you realised that I am the winner,” I stated, more confident than I felt, and wondering what her reaction was going to be.
“I didn’t… I mean, I wasn’t…”
“What ‘didn’t’ or ‘wasn’t’ do you mean?” I asked quickly.
“This,” she paused, “I’m your sister and it’s now getting far too weird,” she finally said.
My fingers were still gripping the tag of the zip.
“You know the word and what you have to do,” I said.
I knew she was stubborn and very competitive, so it was no surprise when that steely look came back into her eyes, and after a few moments, she moved her hand away. It was a good psychological move on her part, calling my bluff and leaving me to make the decision about going further.
I hesitated now, should I go that extra step? Was she really going to let me, or was she just testing me? More confusion, especially as she now gently rotated her hips pressing my cock hard against her; her eyes and expression daring me to do it.
She should have known to never dare a fool, so slowly I pulled again on the zip’s tag, seeing it open, exposing increasingly more of her bare skin. She definitely wasn’t wearing anything underneath.
I expected her to stop me as the zip got lower and lower, sliding over the hills of her breasts, past her belly button, until it stopped against the bottom fastening, but her expression never changed and neither did her motion beneath me.
Leaving it where it was, I reached up and slowly parted her top. Gradually the valley between her breasts came into view, then the inner sides of her mounds and finally her breasts and very dark and erect nipples. I had only ever seen her breasts covered in clothes, or a bikini now and then, so this was the first time I had seen them bared.
I saw her bite her bottom lip, almost embarrassed, but nothing else changed.
I took a good look at what I had revealed. Two, unsupported, firm, white, breasts, at least a handful each, with their respective hard nipple perched on top of each one. The areolae surrounding the nipples, a dusky pink, with a few raised bumps on each that further pointed to her arousal.
I slid my hand up and cupped each of those beauties in turn. I ran my fingers down the valley in-between, pushing each breast sideways to make room, and seeing them spring back together. I drew circles around the outside of each one and then moved inwards to tweak each nipple in turn.
Now that I had full access, by moving my head, I was able to put my lips over one of those hard nubs, my tongue feeling the tiny bumps of its texture. I sucked and then ran my tongue around it in my mouth.
“Ohhhh,” she sighed, and increased the pressure of her hips upwards.
While teasing her nipple, I started to meet her thrusts, rubbing my covered cock up and down on her tight leggings, over her pussy. There was little doubt now that we were dry-humping, in a very sexual and un-sibling-like way.
Both of us were breathing faster now, and I could feel my own heart thumping in my chest at the thought of how taboo this thing was that I was doing to her, and how sexually excited I was feeling.
Sucking her nipple and moving in time with her, was obviously stimulating Julie too, as her eyes were again half-closed, and her face was quite flushed. She didn’t do anything with her hands, just left them lying beside her. I assumed she didn’t want to encourage me in any way and give me the impression she was instigating anything for me to do more.
I knew we had already crossed a line – well several actually – but only under the pretence of the ‘game’ we were playing, I wondered now how far she might really go. I could tell she was as worked up as me and after all, it had been she who had initiated the grinding that we were still doing.
My brain and my thinking were now starting to be guided by the feeling coming from my hard cock rather than any logical thought, and I decided to move it up yet another level and see how she reacted.
Still sucking and teasing her nipple, I slid one hand down between us to where my cock was pressing on where her legs joined and slid a finger between them. Christ, her legging were very damp there.
“CHRIS, what the fuck?” she said, surprised by the feel of my finger directly between her legs.
“What?” I said.
“You’ve got your finger where you shouldn’t have,” she replied, having stopped any movement of her hips.
“I thought you said there were no rules?” I repeated her words.
“I know but that’s not what I meant,” she said, clearly confused now about what to do about it.
“So, you’ve reached your limit and have to give up, is that what you are saying now?” I asked, knowing it would grate with her.
She thought for a moment or two, biting her lip and remaining still, my finger still resting against her pussy lips that I could now definitely feel through the crotch of her damp, tight, leggings.
“That’s not exactly what I’m saying,” she said, eventually, “but we could just call it quits now, if you want and no harm done?”
“I’m not sure I do,” I said, enjoying her discomfort and wiggling my finger against her.
“Ohhh,” she gasped, as she felt my finger prodding and poking her sensitive spot, feeling the material give and stretch so that my finger was between her lips pressing it in slightly.