If your girlfriend leaves you tied up and half naked, what can i do?

Video provided by club belami what a funniest surprise i find when i get home from work. my roommate and her girlfriend like strong emotions, what excites her is to tie him up and put things up his ass and connect the webcam so that any stranger who wants to see them. but she gets mad at him and leaves him half naked and tied up. i find all this so horny that i take the opportunity to give him a good cock in her ass since she likes rubber ones so much.