"I don't really want to suck you off again, Jack," she says quietly, as she keeps lightly stroking my cock. "I want you inside me. I want you to fuck me, Jack.
I can't believe I'm hearing right. My twin sister, who I've been fantasizing about, as I spied on her through her window, is now asking me to fuck her delicious, young pussy. But I'm having second thoughts. If I fuck her, then there goes the reason for the blowjob lessons and her concern about letting Tony or other guys fuck her. I've been thinking that if she gave her boyfriends blowjobs, but didn't let them fuck her, she'd be coming home to me hot and horny after her dates. If I take her virginity now, there's less reason for her to put limits on what she'll do with other guys, and less opportunity for me.
"Lisa, what about keeping your virginity. What about waiting for 'THE ONE' like we've been talking? We're only doing this to give you blowjob practice to get Tony back from Barbara the slut, right?" Even as the words leave my mouth, I realize that we've already gone much farther than simple blowjob practice. I want her more than I've ever wanted anyone. I really don't want to share her with any boyfriends.
"Jack, I don't care about Tony. He can have Barbara, the slut. Right now, I'm aching for you to slide your hard cock up into my burning, wet pussy. Don't you see, Jack? You're THE ONE. I want you to take my cherry. Please, Jack," she pleads. "Do it for me. Please."
She moves her hand down from my cock shaft and is playing with my balls. I'm hard as a rock and I know her pussy is as ready as it is ever going to be for her to lose her virginity with as little pain as possible.
"It might hurt a little at first," I tell her. "It might be better if you're on top and lower yourself onto me, so you control how fast it goes."
"I trust you Jack, and besides it's like a swamp down there right now, after what you've been doing to me. I think you'll slip right in without much problem, don't you." I laugh at her description of herself and kiss her hard on her lips.
"I love you, Lisa," I whisper as I pull my mouth from hers and look her in the eyes. "I've never wanted anyone as much as I want you." I slowly slide my cock head inside her pussy. I had positioned myself over her as we were kissing, and now I watch her face as I gently push my cock in a little farther.
"You are the most beautiful, sexy, delicious girl in the whole fucking world," I say, pushing very slowly inside her well-lubricated, little hole. She smiles at me and raises her knees off the bed, spreading her legs wider apart. She is extremely tight, but her juices help me slide about half way in.
She starts kissing me again, as my cockhead starts to meet resistance. I must be pushing against her hymen. I pull back, sliding my hard cock along the narrow channel of her velvety pussy.
"This is it," I say, locking eyes with her. "Are you sure?" Instead of answering me, she raises her feet off the bed, wrapping them tightly around my ass. Pushing down with her heels and thrusting her hips upward, she plunges my cock down into her pussy the rest of the way.
"Arrgghhhh!" Lisa cries, as my cock breaks through and my balls slap her ass. I gently rest her back down on the bed and just hold her without moving.
"You okay, Sis?" I ask, watching her face for signs of regret.
"Yeah," she smiles, although it's almost a grimace. "It surprised me mostly, but I'm getting used to it now," she says, wiggling around, trying to get comfortable. She is so tight, and the inside of her pussy is so hot against my cock, it feels like her juices are boiling.
"It feels pretty wonderful, Jack," she says, after a minute. "Your cock fills me up like your fingers never could." She relaxes her legs and moves her feet back onto the bed, keeping her knees up and her legs spread wide apart.
"Fuck me, Jack. I'm ready for you to really fuck me!"
I slowly pull the entire length of my cock out of her snug, little pussy until just the head is inside. Then, just as slowly I push it all the way back in. She is steaming hot and so tight that it feels like a thousand needles are massaging my cock. I repeat the slow sliding in and out until she is arching her back and raising her hips up to meet my strokes. It's like a dream. I'm actually fucking my sister! My cock is sliding in and out of my twin sister's tight, virgin pussy. No one will ever feel her pussy like I'm feeling it right now. I start pumping faster.
"Yeah, Jack, faster like that. I want you to fuck me faster." My sister is now raising up her ass and matching me stroke for stroke. Her hands are gripping my back, pulling me tightly against her. My face is buried in her neck and my arms are under her shoulders. With my hands holding her body from sliding up the bed, I slam my cock harder into her pussy. My balls are slapping her ass and she's grinding her clit against me as I plunge deeper and deeper into her hot, virgin hole.
"Keep going faster, Jack! Yeah, harder like that. Don't stop, Jack. Don't stop. Yes! Yes! Ohhhhh God! Jack! Jack! Pleeeeeeeezz don't stop!! Ohhhhhhhh." She is clawing at my back and screaming as we keep up the pounding rhythm of our lovemaking. I'm getting close and I'm trying hard to keep up with her, as she arches up and down faster and faster, pushing my cock in and out of her incredibly tight pussy.
"Ohhhhhh, Don't stop, Jack! I'm cumming!" She wraps her arms around me and holds me tightly to her. I pound into her as hard as I can. My balls are slapping against her ass and I can actually hear my cock moving in and out of her slushy, wet pussy. When her fiery pussy walls clamp down on my rigid cock, it puts me over the top and the first load of cum, to ever touch her virgin pussy, is squeezed out in spasmic bursts from my hard, throbbing cock. She bucks and shivers as our orgasms meet each other in a climatic push and she wraps her legs around me, holding me deep inside her.
We are both panting and I can feel her chest rise and fall against mine. I turn my head and kiss her gently on the lips. We stay tensely pushed up against each other, waiting for our orgasms to subside. My cock is fully spent inside her and I can feel her pussy pulsating around it. I relax a little as I lay there on top of her, catching my breath. Neither of us says anything for a long time. We just hold on to each other basking in the afterglow of her first time. Lisa is the first to speak.
"That was wonderful, Jack!" she says, turning her head to look at me. "It didn't hurt as much as I thought it would. You were so gentle and so loving. And of course, you had gotten me so hot." She's smiling up at me with her head tilted to one side. "So, still think being with your sister is weird? Do you think what we're dong is wrong?"
"It isn't weird, Lisa. What's weird is that you're so incredibly sexy; you make me forget about any girl I've ever been with or even fantasized about," I say, kissing her on her lips. "I really love you Lisa, and I don't want to stop what we've started."
"Neither do I, Jack," she says, squeezing her pussy muscles around my spent cock. "You've made me into a woman today. I want you to keep making me feel like a woman."
"What will be wrong is if we let ourselves get caught," I say, looking at the clock. "Speaking of which, we better get ourselves and your bed cleaned up. We have about another hour before Mom gets home. I think we should take a shower."
"Together?" she asks, smiling up at me.
"Yes! And then we need to wash your bedding and air out your room. It smells like sex in here. Tomorrow we need to remember to pull back the covers and fuck on the sheets instead of the bedspread."
"Tomorrow? So you're already planning ahead, huh? What have you got in mind for tomorrow? Are you going to assign more homework for tonight?" Lisa asks, laughing.
"Yes. Tomorrow, the day after, and the day after that, and the day after that," I answer, kissing all over her face as I speak. "And since you're such a good student and you got extra credit for your additional research last night, I want you to do some more research tonight. I want you to look up all the different sexual positions you can find and make a list of the ones you want to try," I tell her, moving my mouth to her neck. "I already know of two that I want to try. I really want to do it with you on top, so I can watch your sexy tits bouncing up and down, and play with your nipples while we fuck. And you have such an incredibly beautiful ass, Lisa, that I can't wait to fuck you from behind and watch the curves of your ass, while my cock slides in and out of your pussy."