This is not something that is forgiven, in any case one must forgive oneself to eliminate all types of resentment or damage, I am not saying that you should not talk to that person again because that is part of each person and each person's decision, but You should never forgive, for example, an infidelity. I don't mean that you live with hatred for that person, just that you don't forget and understand that you shouldn't trust that person.