The Sister, Part Eleven [M19/F18] [Cheating] [Erotic Couplings]

**PART ELEVEN**

“With pleasure.”

We were too close together for me to actually see the smirk, but I could practically sense it based on her tone. I felt another light stroke of her fingertips over my jeans, and foolishly took the bait and tried to shift my hips forward like before. Once again, I was denied; Natalie’s hand retreated upwards this time, to meet her other hand at the button of my jeans. She didn’t tease me this time around, however, and wasted no time in undoing it.

I was in too deep at this point to slow down, and found my own hand pulling on the string of her bikini top to undo the loose knot. Last time, I had averted my gaze when she had been dangerously close to revealing her chest. Now that we were here and my brain was doing less of the thinking, however, I was determined to see what Natalie looked like topless. The fucked up part was, a part of me was interested in comparing her to Jessica.

Instead of stripping each other during a passionate kiss, this was more like a never-ending moment of suspense. Inch by inch, Natalie lowered my zipper and I finished untying her pink top. Our lips brushed a few times, breaths mingling as we stood intimately close to each other. It was like we were daring each other to make the first move.

Once my jeans were properly loosened, Natalie’s hands trailed up to grip the waistband on opposite sides. There was something about the way she never broke contact that was subtly arousing, which just added to everything else she had done to ensure I was thoroughly lusting after her. I paired my upward movements with her own, tracing the smooth skin of her upper back with my fingers until I could untie the second set of strings still gently knotted on her neck. She must have rushed the job when Jessica arrived downstairs earlier, as it barely took one tug for the strings to become undone.

The bikini top fell to the floor between us, and Natalie was quick to step forward and press her bare breasts against me. Shifting her head forward, she pressed her lips to my ear. Just like how we just were, there was a long moment of silence and stillness as I took in all the points of contact. Her hands, on my hips. Boobs, against my bare chest. Soft breathing, which I could feel both from the proximity of her lips and the way her chest slightly rose and fell against mine.

She finally broke the spell with a light nibble and a sultry sigh. “Do you want to fuck me?” she whispered.

There was only one answer. “Yes.” My hands trailed back down from her neck until I was holding her bare sides. I wanted to explore her chest, to see just how those small, perky breasts felt in my hands, but had to settle on my palms resting on their sides for now. Due to the way our heads were positioned, I was fairly close to Natalie’s ear as well, and guessed that she might want to hear some more ‘magic words’ to keep this going. “I want to fuck you, Natalie.”

“Good boy.” The same ‘praise’ from earlier. She said it so casually, yet it struck even more of a chord when murmured in my ear. Taking a second to make sure she had a good grip on both pants and my underwear, Natalie gave a small downward tug. Little by little, teasing as ever, the cocky girl pulled my clothes down until she succeeded in freeing my dick that was thoroughly hard from everything she was throwing at me. “You know,” Natalie said. Apparently deciding that she had stripped me enough for the time being, she softly wrapped one hand around my exposed shaft. Without even a squeeze or a stroke, it was enough to make my member pulse and maintain a full erection from her touch, “It’s not too late to call this off. I mean, I *am* your girlfriend’s little sister. That doesn’t bother you?”

Fucking BRAT.

Of course I knew that. It was a much bigger hang-up than her age, since knowing she was eighteen and just a year younger than me offset the fact that she wasn’t due to graduate for another couple months. Cheating was harder to justify, particularly considering who I was doing it with. And just when those thoughts had come close to disappearing into the depths of my mind, Natalie brought them right back to the surface. The shameless girl had waited until we were both nearly naked, until my cock was in her fucking hand.

A part of me was tempted to push her away. Less because of my need to be faithful to Jessica, and more to keep Natalie from getting what she wanted. But I couldn’t. I knew exactly what she was doing, but I was too hot for her to stop it. Of course, it *did* bother me on some level. She probably knew so, but I still wasn’t going to give her the satisfaction of saying it out loud. “It doesn’t mean anything,” I muttered. Her words.

“No one has to know,” she replied. The other little mantra she had coined a few minutes ago. Only this time, it came with a condition. “IF you do a little something for me.”
Whatever resolve I had in terms of pushing back against the girl’s games, more in the name of ruining a bit of her fun rather than actually trying to get myself out of this fucked up mess, instantly crumbled when she lightly squeezed while simultaneously sighing a borderline moan right into my ear.

“. . . What do you want?” I hesitantly asked.

“Nothing you can’t handle, babe,” she said. Pulling back so she could meet my eyes, while keeping us positioned just how we were, she gazed up at me with a seductive smirk. “I want to hear the words. Tell me *exactly* who you want to fuck.”

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Source: reddit.com/r/eroticliterature/comments/ylht9a/the_sister_part_eleven_m19f18_cheating_erotic