We are called to forgive, but not to forget. It is interesting though that likewise we are called to live like Christ. This being so, it brings to mind the verse that starts, "He is faithful and just to forgive s our sins and He remembers them no more."
I have never forgotten when someone has done me wrong. It is part of who I am, and I seek to learn from it. I do not know if this means that I am less like Christ, but I do not wish to be a fool. I can forgive, but I will not forget.