My Virgin Sister

“Now, fuck me, Jack!” Lisa yells.

I pull the straps from around her legs and help Lisa get the big one from under her arms. She falls on her back on the sticky, wet air mattress, and lifts her legs up to her shoulders, exposing her wide open, dripping cunt.

“Hammer me, Jack. Pound my pussy with your hard cock.” I slam into her in one hard stroke and pound her soggy pussy like a jackhammer. My balls, which have been building up cum for nearly an hour, are smacking her ass on every down stroke.

“That’s It! Fuck me, Jack! Fuck me hard! Oh God! I love it! I fucking love it!” I’m pushing her legs down until her toes touch the air mattress, just above her shoulders, and pummel her pussy with my cock. I can feel my balls tightening and I start pounding even faster as I near my long awaited release.

“I’m cumming, Sis. I can’t hold back, I’m cumming!” I push deep inside of her and my cock erupts, flooding her pussy with my hot jism.

“I can feel it, Jack! I can feel you cumming inside me. It feels so good. I’m right there with you! I’m cumming, too!” Her pussy clamps down on my cock, as I jerk in and out of her. Her pulsating muscles milking load after load of cum from my throbbing cock, mixing it with her own gushing juices.

I release her legs and she lowers them back down on the air mattress. Our hearts are pounding against each other, as we gasp for breath. I raise myself up on my arms to take deeper breaths and watch Lisa’s chest rising and falling. Her nipples are as hard as steel, sticking out like bullets from her milky white mounds. I enjoy the sight for a minute before leaning back down, crushing her tits against my chest. We are both totally spent, and I lay on top of her, with my cock buried in her pussy. It’s long time before either of us moves.

“Why were you looking at me like that?” Lisa asks, a quizzical look on her face.

“I love looking at you. I’ve always loved looking at your perfect tits. They’ve turned me on since the first day I saw them,” I say, reaching between us and cupping her right breast with my hand.

“Always, Jack? A whole two months now, huh?” Lisa laughs. I laugh too, but not the same way. I am staring into her eyes, trying to decide whether to tell her about spying on her when she speaks.

“What, Jack?” she asks, locking eyes with me.

“Actually, it’s been longer than two months. I’ve been watching you through your bedroom window since right after we moved here.” I’m holding my breath, waiting to see what she says.

“What?” She looks incredulous. I don’t think she believes me.

“Yeah. I didn’t have a girlfriend, I was really horny, and you looked so sexy in your swimsuit everyday, I had to see what you looked like naked. I started spying on you while you were changing.”

“When? I never saw you,” she says, shifting her body under mine.

“If you saw me, it wouldn’t be spying, would it?” I say, sarcastically. “I was getting myself off outside your window everyday, Lisa, as you changed into your swimsuit.” There I’d said it. I just look at her, still massaging her tit, waiting for her reaction. She doesn’t say anything for a while. Then she looks right at me, smiling.