Is he he telling you all this stuff himself? If so, that's just plain cruel. That's why you need LC/NC, so you won't have to listen to his crap. Don't bother attempting to be friends with him right now-- wait until you're stronger/more detached (at which point you may no longer care to).
You are still giving him too much headspace, but it might not be such a bad thing for you to get mad at/hate him for a while-- AS LONG AS YOU DON'T ACT OUT ON IT. Remember, living well is the best revenge!
