My girlfriend just found out that I visit sex chat rooms online. She's threatening to leave me if I don't stop. I told her it wasn't anything serious, but she says it's cheating. Is online sex considered cheating the same way realworld sex is?
Whether you consider it cheating is irrelevant. Your girlfriend does, and no amount of debating will change that. You know what you need to do if you want to keep getting real-world sex at home: Decide whether your desire to do something "recreational" is more important than your girlfriend's feelings. If you care about her, lose the online sex—or lose the girl.
P.S. Real men don't sneak around their girlfriends' backs and do what they want anyway, so kill that idea, too.