Have your cum join Mason's on Emma's face

When you're ready to explode you pull out, move forward, and pump your cock as your cum streams out of your cock onto your girlfriend's face. Your cum mixes with your best friend's, leaving Emma looking, well, as Mason said, she looks like a whore.

Mason gives you a pat on the back after you finish on your girlfriend. He gets dressed and you tell each other no hard feelings and what not before he heads out.

Emma says she's going to take a shower and runs off. You notice she takes a very long shower and you think she's probably getting herself off in there. Eventually though she comes out, free of all the cum you guys blasted on her.