Forgive, but don't forget. If you don't forgive, it's you who continues to suffer. Desire for blind revenge won't make you feel any better, and it will keep you trapped in the abusive relationship. Forgiveness sets you free--you arrive at a place where you could not care less about past abuses and become immune (at least emotionally) to all further attempts. However, don't ever forget. Remember the wickedness, and don't let yourself be fooled again.