Sleeping around? Don't tell your partner, or they'll feel sad. Oh, wait: if you're feeling guilty about cheating, don't tell your partner, or you're just relieving your guilt while dumping emotions on your partner. Wait, so I'm supposed to admit cheating while I'm having fun at it? That may make a little sense, but it ensures that she leaves, and then it's no longer "cheating"; so, I suppose, the theory is to cheat long enough to feel guilty about it, and then you won't have to tell anyone. Problem solved!