I usually don't preach giving up on long-term relationships, but he has to get over resenting you. My BF and I have recently been on AMAZING terms after I forgave him for breaking up with me. We decided to work out out right afterwards. We spent three weeks apart and I reset myself on a vacation in the Pacific Northwest and talked to my friends a lot and have forgiven him completely. You can't control him. He HAS to get over the past or else it simply can't work.

I'd suggest having a talk with him in which you ask him to identify his frustrations at the situations and NOT you.

I will say this though, leaving you abusive letters is not cool. It's emotionally abusive. No offense, but he sounds REALLY immature. There are good times and bad times with relationships, but overall, if you feel like a POS and wish it was the end, then it's not healthy for either of you.

Once again, I'd have a frank talk about how you are focused on recovery and how he either needs to be supportive or it won't work.

He might respond better if you speak humbly, but are assertive. You deserve the best.