My roommate fucks my ass while I fuck his girlfriend from behind

My roommate walked in on me fucking my girlfriend on the couch. He then removed his trousers and fucked my ass while I continued to fuck my girlfriend from behind. I then suck my roommate's cock while fucking my girlfriend missionary style. My roommate and I then kissed while he fucked my girlfriend doggystyle. I then lick my girlfriend's pussy while my roommate fucks my ass.