Loving a cheater

I think that a lot o people have been in relationships and their partner cheated sometimes they break up sometimes they forgive. What bothers me the most is if your partner cheats and thinks its ok this partner will tell you that you are the love they always wanted but when you try to work it out with them they will say they are sorry but they do not feel any need to give a explanation as to why they cheated.

They think sorry is enough and they want to prove that they are a good Christian woman now and I should accept this as now she could make me very happy..