Cheating on other people.

Of course there's something wrong with it. It's one of the most disrespectful things you can do to your boyfriend/girlfriend/partner, and shows that you don't have the balls to end what you know isn't working out. How on can it ever be right to cheat on another person?

I've met bisexual people a couple times that had a boyfriend/girlfriend of the opposite sex, but somehow to them it wasn't cheating as long as it was with a person of the same sex.