I can tell you for a fact that I am a cheater.
why do you think you're are a cheater?
Some people are simply born with a character that they knowingly cheat and I am one of those people because I cheated on my gf.
It's wrong for you to cheat on your partner. It'll hurt them a lot and that is not something that you would want to do to someone that you love.
It depends on what kind of cheating we are talking about.
There is only one kind of cheating that you have been doing to your gf and it is wrong any way you see it. You don't have to cheat, but you must make the choice not to. You don't want to hurt your gf.