Fills her up.

With only a second of hesitation, he grabs her hips and starts thrusting into her, hard and deep. She laughs and starts to thrust with him, sometimes moaning and sometimes crying in pain.

You see his cock visibly throbbing inside your girlfriend as he gets ready to knock her up. His balls tense up with the first shot inside her. She sits down hard on his lap letting him have his fun.

They sit there for a while in the afterglow, him occasionally twitching as another stray shot of cum squirts into the love of your life, until finally she stands up and says coldly, "Now get out, before I call the cops on you."

He quickly flips over onto his hands and knees, bows once, and then starts crawling to his apartment. Your girlfriend walks over to the door and slams it shut behind him, and then plops down onto the couch with a satisfied sigh.

"Oh shit, I forgot to make him eat you...", she chuckles as she picks up the condom. "What to do with all that nasty semen..."