Teach her how to ride your dick.
From Create Your Own Story
You pull a condom out of your drawer and put it on, then you sit on the bed and gesture for her to sit on your lap. She's as red as her pubescent snatch but she finds the courage to do so.
"Are... Are you going to...?" She bites her lip.
You smile, making her giggle. "You're going to ride me like a horse!"
She let's out a shy laugh. "Wow! Are we really going to do it?"
You pick her up and set her back down with your dick between her legs, pressed against her moist cunt. She giggles and shivers in response.
You kiss her, taking her soft lips by surprise. You open your mouth and slip your tongue into her mouth and lick her tongue, making her moan and tremble as she grinds her cunt against your cock.
You lie down, breaking the kiss and let her get on your dick. She does it slowly, gasping as she slides further down your solid rod.
"Put your hands on my chest and just squat over me."
"Like... This?" She asks and squats with half of your dick in her, and all her weight on her hands - and your chest.
"Yeah, now I'm going to fuck you brainless." You joke as you take hold of her hips.
She giggles as you start a good rhythm, building up the pace and giving her time to figure out a rhythm she likes, and then working with that rhythm. She trembles and moans and gasps as you passionately fuck, getting closer to orgasm with each movement. The way her virgin pussy keeps clenching and squeezing you like she's working to milk you starts to send you over the edge as well.
"That's it, Lydia! Focus on how good it feels, think about how much you want my dick!"
"Ah...! Alex...!" She is getting closer to orgasm.
You still aren't there yet. "That's it, Lydia! Enjoy every bit of it!"
"Ah...! Alex...! Alex...! Hnngh...! Alex...!" She starts digging her nails into your chest.
"Cum for me Lydia! Cum for me!" You grit your teeth and ignore the pain.
"Ahhn...! Aleeex!" She screams your name as an orgasm ripples through her body.
Her orgasming vagina brings you much closer to the edge of an orgasm, and you feel confident that you can blow your load.
Sitting up, you wrap your arms around her orgasming hips and she wraps her arms around your neck as she screams your name. You lift and drop her hips as you piston in and out of her orgasming pussy, letting her milk your cock.
"Aleeex...! Ahhhn...! Aleeex!" Her arms tighten ridiculously around your neck.
Just a little more and you'll cum for Lydia. Cummings for your little sister, so wrong but very sexy!
"Angh! I'm cumming Lydia! Urghh...!"
"Ah...! Haan...!" She breathlessly gasps as you cum inside of her.
You both sit there in each other's arms, enjoying the hazy afterglow of wild, passionate sex. The softness of her body. The heat of her breath. The sweat of her skin. It's all beautiful pieces of an enjoyable masterpiece that's now coming down from her climax in your arms.