Have her spread herself for you and beg.
From Create Your Own Story
"Then lie back and tell me what you want." You say. She does as she's told laying on the floor and spreading her legs looking up at you as you stroke yourself back to erection.
"Please... I want your cock." You stop her, "No, that's not what you want. Be honest or you can go without." She whimpers at this and says "I want your cum." You smile devilishly. "And where do you want my cum?"
She hesitates before answering "In my... mouth, it tastes so good." You kneel down and quickly line your cock with her virgin opening. Fear is in her eyes, but she makes no motions to stop you as you press into her. A grimace forms on her face and you kiss her as you shift your weight to drive down into her.
Her lips convey jet of pain as you slowly force her open. With a final shift you feel her flower yield to you and you slide the rest of the way in.
"AHhhh" she moans out as you break the kiss. Her pussy twitches rapidly and you give her no reprieve as she is dripping wet. You thrust deeply as Kara thrashes beneath you. This forces you to grab her hips to maintain control
"Tell me you love it." you demand "I... I L-love it." she manages through the intense mix of pain and pleasure. You pull her almost useless torso to your chest holding her closer and changing the angle of penetration. "Tell me what you want." This time she recovers enough to wrap her arms around your neck. whispering "Your cock and your cum." You thrust upwards now, slowing your pace and go as deep as you can.
You feel her pussy shuddering on your cock, her nipples jab into your shoulders. It only takes a few more seconds and she lets out a huge gasp and clamps down on you. "I'm cumming" She says in a high-pitched squeal. You summon all you have no to follow suit. You slow yourself as you hold her close. She's panting now, eyes completely vacant. She's sweating lightly.
You look at her, making eye contact as her orgasm breaks. She shocks you as she looks at you and says with a throaty growl. "I want you to cum inside me."
You can't hide your stunned face as she grabs your face and says, "I'm your cum-slut. I'm your dirty cum-slut."
She mashes her face into yours as you take what you can from the kiss. You rock yourself inside her to win back control.
"Does getting knocked up turn you on, you slut..." You throw her carefully to the floor pinning her ankles to the floor over her head. She's really flexible and she doesn't seem the least bit discomforted. "I knew it when you said you didn't want to tell your parents. Your mom's a slut. She'd get you the pill in a half second." You position yourself over her as you push your dick back into her de-virginized cunt. Kara takes a deep moan as you sink back into her. This time you scrape the opening of her womb getting a sharp reaction.
"Mom's always on me about taking it, but I flush them. They make me feel bloated." This draws a laugh out of you. "That's what all the sluts say.... all the cum-sluts."
This time it's all about you, you spear her as deep and as fast as your hips will allow. Kara is loud enough beneath you that you can't help but think about her mother and Adam both of whom are still in the house. Not that this stays in your mind for long.
Your balls begin to tense as they slap against your sluts ass. You know the end is close. You haven't kept track of Kara's pleasure but telling by her gaping mouth and spasming cunt you say that it's time to finish the fight.
You elevate your hips over her so gravity can do all the work. Visions of her pregnant tits leaking milk fill your mind. A brief stab of fear slips into your head but you suppress it easily.
You grunt in animalistic fury. And Kara knows what's coming. She looks up at you with expectation "Cum in me! I'm your dirty cum-slut! I'm your dirty cum-slut."
You grab her throat and squeeze this doesn't stop her verbal barrage. "Make me yours! Make my pussy yours! I want you!"
You almost roar out in victory. "Take it all! Don't waste a drop!" You thrust hard pressing your hips so hard against her you swear you had to leave bruises. "Oh" she manages. You helmet tickles her deepest parts as you cum 4 thick jets one after the other, followed by smaller and smaller shots, each feeling better than the last. You grind against her now and she just quivers as she waits for your load. "I can feel you cumming.... how is it bigger than the last one."
You're about to reply when you catch a figure in the doorway. It's Adam... Busted like Benjamin Bunny.