What's wrong with cheating?

No.13767722 ViewReplyOriginalReport
First of all I'm monogamous and don't cheat, but I've been thinking about the psychology of it

Is there any inherent moral problem with cheating?

Everyone seems to agree unanimously that your own insecurity/jealousy is your own problem, not your partner's. As far as I know, cheating on your partner doesn't hurt them except by making them feel jealous or inadequate.

I know it's wrong to lie about it, or to break a promise, but is there anything inherently wrong with cheating itself?