[Jamie89]

No. I don't think cheating is a character trait, and everyone can make mistakes but it doesn't mean you'll make the same ones over and over again. It's probably true of some people for other reasons, such as them being selfish or uncaring or just generally not having respect for their relationships for whatever reason, but mostly I think people are allowed a mistake and are able to learn from it and not repeat it. (Depends on the circumstances of the affair as well, 'cheating' is a broad term but I think there's a big difference between say, a one night stand and a full blown relationship.)