Ugh, that sounds SOO painful. I’m sorry you’re going through this. In my past, I’ve had some luck chanting things like “I let you go with love” and meditating on my loving thoughts for someone who was no longer in my life, as well as sharing both my loving feelings and my pain with all the people on the planet who are feeling similarly. It helps put things in perspective, and allows you to still feel love for this person (who is obviously in a lot of pain if he’s treated you this way) without needing to be with him.