What are the different meanings to the word “forget” when we say, “Forgive and forget”?
I think people usually mean this: Do not let the previous injustice get in the way of your relationship now. It does not means this: Do not remember the other person’s weaknesses so that you are vulnerable to continued injustices. In other words, “forget” means this: Remember in new ways, without deep anger, and watch your back.
For additional information, see Forgiveness Defined.