Forgiving may not be easy, but doing so is for your own good. You just don't want to stress yourself out, and just set them aside. It's moving on for yourself, your mental health, and saving your energy. It's not about allowing their bad behavior. You just don't want them to do it again on you.
A beautiful dusk as the sun has already set, leaving a beautiful scene in the sky. What a masterpiece from the Creator.