Letting go is never easy. The desire to have, to hold, to possess and to control is part of our nature. But the more powerful part yearns to learn the lesson of growth and openness; to enter the mystery of secret loving without desiring, to live in emptiness and stillness and therefore in a state of receptivity and readiness so that the quality of our being and "our being present to" are all that matter.
Cara Mia, if that man has not separated you from the love of God, and he has not, then the only thing keeping hate of him alive is your thought about him. Only your pride keeps him in your memory. Dissolve your pride, and you dissolve your hate. To be still possessed of the hate that pain made is not intelligent. Take care. It can sap your energy to what you know to be your purpose. By being troubled about it, you have already discovered it to be unworthy of your grander aims, and that is the beginning of humility.