If you decide that you want to be with your partner after he/she was unfaithful than that is the decision you make and live with it. Not to long ago I read an article where the author said that she wont forget what that person did to her even though she forgave him. But is that real forgiveness? no I don't think so. I know it is not easy to forget after someone you love betrays you but you cannot live life happy with that person if it is still in your heart and mind. Obviously your heart is not a hard drive where things that happened can get wiped out instantly, but then again it is in a strange way. I think you can learn from that experience and become a stronger person and down the road even help someone you know who is going through the same agony you went through. But "not forgetting" should not be an option because all that will lead to is insecurities. Not forgetting its like having a seed of doubt planted in your heart an anything, in your mind, strange that your partner does you will began to doubt. You will begin to question his/her motives and sooner or later you will start reaching conclusions, which most likely, are wrong. That seed of doubt grows and trust me it will make you and your partner miserable, and many times you will look pretty ridiculous because of your insecurities.
So either you forgive and forget or just let it go. If you cannot let it go then let your partner go because you will only bring agony to the relationship down the line by never forgetting. When I was young and I would get hurt in my basketball team my coach would tell me " walk it off ". He was right, most of the time i'll be fine afterwards. So now I tell you the same if you got hurt by your loved one and you still want to be with that person then " walk it off ". Its that simple. Either you forgive and forget or move the fuck on.
