I think you’re confusing forgiveness with acceptance. You can forgive him without accepting him back into your life in a position to hurt you the same way again. Realize that he is who he is. Forgive him whether he changes or not, whether he apologizes or not. But distance yourself from him now that it is becoming evident that he’s repeating a pattern. Forgiving does not require you to become a doormat or continue to accept the same treatment. The forgiveness is in big part for you…not him.