Finish and move on.

"Fuck this," you think. She's hot and all, but the bitch is crazy. If you stay here too long she'll be convinced you're her boy friend and that she's more than just a piece of ass.

You grab her hips and thrust deep. Once, twice...

You can feel the familiar feeling of your balls tightening up. You make eye contact with her and then start to pump your load into her. She looks at you, wide eyed for a moment. You'd never come in her without a condem before, but then she started to orgasm and her eyes rolled up in her head. She buried her face in a pillow and screamed at the top of her lungs.

When you're done, you pull your cock out of her. It's already going limp. Before you can do or say anything else, she is on her knees in front of you with your cock in her mouth. She's sucking your mixed juices off with more **** than you imagined possible. Suprisingly, you feel yourself starting to get hard again.

You know this is a trap. She doesn't want you to leave, and in this moment, leaving isn't exactly looking all that great.