Cheating is bad...right?

Cheating is not only bad, but the stupidest thing that a complete idiot would do especially when a guy/girl has the one of the good ones. Once the cheating starts, that person will always be a cheater

Of course it's bad. And anyone who cheats on his girlfriend /her boyfriend is bad.
I also disrespect people who know that someone has a boyfriend/girlfriend and have something with that person. Cheaters are cowards who can't decide who they want to be with. Honest men/women tell bạn when they have a problem with bạn (may it be in a communication way / sexual way whatever) and break up with bạn before something happens with them and someone else.
Well why do bạn think someone CHEATS on his girlfriend? It's thêm convenient for some idiots to have a great sexual adventure AND safety at home. Either bạn have an open relationship hoặc you're honest to the other person right away saying bạn want nothing serious. Anything else is lying to the one who loves you. And YES not saying anything to someone is a lie as well.

I think it is terrible..but I am in the situation where this guy is cheating on his girlfriend with me. I feel really bad about it and so does he. She has to break up with him(LONG STORY) and she just won't. She hates me already, and we are cousins bởi marriage. He is only dating her because she is "open". So I am very confused.

Of course, bạn can only have one girl/guy at a time when in a relationship, because that's the way dating people is.

yea, cheating on someone is not ok, no matter who it is.

i cheated on my boyfriend with a dick head who slept with someone two years older than him yea total đít, mông, ass and now me and the guy i cheated on are just starting to talk again only thing is he dont know i cheated on him i know im a terrible person and i guess i wasent thinking cuz if i was i never would of cheated on him hoặc dated the guy that i cheated on him with confusing? yea kinda i know anywayz im a bad person

No shit.

Think about it. Would u like it if your boyfriend cheated on u? Probably not. So u r right, it's bad. It breaks hearts and is the main reason for divorce and break-ups.