Some dude caught his girlfriend knocking boots with another woman. Of course he was upset, but decided as long as they could have a threesome, he'd get over it.
Bold of him to assume he's that sexually competent. Bro, you literally just caught your lady cheating on you. And you think she wants to have MORE sex with you?? You clearly can't even keep one chick satisfied. Now suddenly you can multitask and please TWO??
Also it just feels creepy in general. She obviously messed up with cheating but to feel entitled to sex from women like that is, like, a GIANT red flag. Ew.