Cheating!

So like a rumor of one of our friends has been going around town. Apparantly, Jules n Mike are no longer together. Unfortunatly it isn´t true. The dude was totally hitting on one of our friends, but didn´t know that she knew his girlfriend. What a dumbass.
So now the question is, what to do? Do we tell her, and how do we go about breaking the news to her. Fuck if I know, he´s a big time loser anyways. He´s a recovering addict(no offense,good for him)and can´t hold a steady job, he asks her for money.WTF. Plus, he´s a total macho. Eeeewwwwwww.