When somebody hurts your feeling, it's not that person, but there's an unseen beast that comes out of that person to bite and hurt you. So, what happens when you forgive is that, "Forgiveness does not remove the past hurt, but it breaks the jaw bone of the beast that has bitten and hurt you, so that the same beast could no longer hurt you."
That's why even if you have forgiven the person, you can still remember what that person has done. But now you don't feel any pain anymore, because the beast is no longer biting and hurting you. The teeth with which it has bitten you had been broken.
When you remove the teeth and the Vernon of a poisonous snake, the snake could be used as an ordinary rope to play with. Thus, when you forgive, you slay a beast. Shalom.
