It’s easy. To some men, if they’re going to cheat, it’s much easier to do it with a former flame than go out and try to find someone new to do his dirty deeds with. 5. It doesn’t count. Yes, ladies, there are actually some men out there who firmly believe that having sex with someone you already had sex with is not really cheating! If he plays out the challenge and his ex is up for a quickie, that’s his validation that he’s still hot, good in bed, etc.