Secretly paid for sex
This cute teeny thinks her boyfriend is giving her a free fuck on the side, but the sneaky bastard doesn't tell her the whole story. He got paid to let his rich buddy fuck Lili and he stays to watch her suck dick and get cumsprayed like a whore just for fun. Now this is how you do business when you have a girlfriend with a body to die for and a lovely tight pussy. What a great fucking deal!