SCOP-853 Rubbing a friend's big-breasted girlfriend at a drinking party, she masturbates despite saying no

The girlfriend has no bra, visible cleavage, and see-through clothing, with big tits that are hard to ignore. With the friend asleep, the man secretly rubs her breasts. She says she can't because it might wake her boyfriend, but her lower body reacts, leaking juices. In the end, he cums inside her, a pussy that accepts dicks other than her boyfriend's.