How many can actually forgive their partner for cheating? What makes you think they won't do it again? Also, is there ever any justification for cheating? I personally think there is no justification. If you are not happy and not being fulfilled in you current relationship, then get out of it first. If you are happy but just want to play on the side, then you deserve to get caught and be left, because you are being selfish and only thinking of yourself.