Forgive and forget.
Prov. You should not only forgive people for hurting you, you should also forget that they ever hurt you. When my sister lost my favorite book, I was angry at her for weeks, but my mother finally convinced me to forgive and forget. Jane: Are you going to invite Sam to your party? Sue: No way. Last year he laughed at my new skirt. Jane: Come on, Sue, forgive and forget.
forgive someone for something
to pardon someone for something. Please forgive me for being late. He never forgave himself for harming her.