Girlfriend Of The Year

Was out on the town with my girlfriend. She has a boyfriend, I am single. We found two studs who turned out to be roommates and decided to go home with them. We get fucked by our guys in their separate rooms and then sleep over. Next morning, as I was preparing to leave, I pass by the other room and see my girlfriend giving her guy a blowjob. I think the guy must have been into cheating girls, because he had written "GF of the year!" all over her ass, lol. I got a little turned on and went back to my guy to give him one last blowjob. I then left, but she stayed. Clearly she was enjoying herself