Forgiveness is important for your healing, even when they don't ask. Sometimes we have to say it over and over thru time to make it stick kind of. One thing that helps me with forgiveness is thinking what did they go thru that made them that way. He probably was beat up at home by his Dad or something and his unresolved anger hurt came back on you. Sometimes those who are the closest get the worst of us when we are deeply hurt even if it isn't by them. Feeling compassion for him in his own hard circumstances can soften your heart to forgive him. Pray for him, even. It will help you overcome and trust people more. Also, look in their eyes when they say something you aren't sure they mean, the eyes are the window of the soul, they do tell the truth in some way. Maybe sometimes you are right that they aren't genuine, but give them the benefit of the doubt.