Most Helpful Guy
This is why, when you break up with someone, you need to make a CLEAN BREAK, meaning NO CONTACT. All you are doing is torturing yourself by continuing to have contact with him. He obviously doesn't want to be together, so there's no reason to keep in communication with him.
When I date a girl, I tell her "the door is over there; you are free to walk out at any time. I'll do my best every day to make you WANT to stay, but I can't force you to and I won't try. But know this: that's a one-way door, and once you walk out, there's no getting back in, so make damn sure you want out before you walk out."
Most people simply cannot be friends with an ex. You can be CIVIL, but you can't actively be friends, and to expect anything else is unrealistic. Learn to make a clean break, and it will all be easier.