Heather wants to be your slut

You pump into her, even after you've stopped squirting, just to keep her coming. Finally, she slumps to the floor, pulling you down with her. Your body covers hers, your wilting cock wedged between her legs. Her body shudders in an intense aftershock. Your breath is coming in ragged huffs.

With her head turned to the side, she whispers, "I want your cock. I don't care if you keep dating my sister. Fuck her all you want. Hell, marry her. Just fuck me too. I'll be your dirty little slut, secretly fucking you when she's not around. Just give me that cock." Heather sounds totally hooked, like a junkie. You kiss her shoulder and then stand up. Your girlfriend's sister whimpers at the loss of contact.

"If you're my dirty little slut, then you need to clean me up and get me off one more time."

As she rolls over and looks up at you, you wiggle your Johnson at her. Heather giggles. She flows liquidly to her knees at your feet, grasping your cock at the root. She leans in and licks it like an ice cream cone, her tongue making a wide swath around the fat head. Your cock is drooping, but still pretty thick. A few licks and it's getting stiffer already.

You groan when she takes the head in her mouth. She sucks hard on it, and her tongue keeps lapping at the bottom of it. You can feel yourself growing in her mouth. She bobs in and out, sliding her hand up and down the part not in her mouth.

She takes you out of her mouth and strokes you quickly. "Do you like my mouth? Does it get you excited when I suck your cock down my throat?" She licks the head again, making you groan. "Where do you want to come? In my mouth? In my hair? On my tits? Or would you rather add to your cum inside my tight little cunt? I can feel your little swimmers oozing inside me." Then she takes half your huge length in her mouth at once. You moan and watch her lips stretched wide around it. Her fingers keep up their half a hand job below her mouth.

Through your head runs a video of her sucking your cum down her throat, then it switches to you squirting into her hair. You then imagine her laying back and taking your spray on her chest. Then you see your cock up close, pumping into her pussy. Heather starts moaning and humming around your meat, thrilling you up and down your spine. Your balls tighten a bit, telegraphing their impending release.