Most Helpful Guy
An ill fit? Maybe. But that is by no means abusive. It sounds like you both struggled with the relationship and his comment after your split makes me think he wanted to want you so bad. He wanted to be attracted to the woman he loved and it was something that could be done.
The way I see it you guys were both sad because you wanted to be happy and make each other happy. When he said you didn't need to change the reason he said that afterwards is because he knew it wasn't true when you were in a relationship together.
As for blocking you I have no explanation. Maybe he just wanted to move on after you left him, and remaining in contact would just be torture for him. He's probably scared in the sense that he doesn't want to linger around you, like an alcoholic keeping around a sealed bottle knowing he can never drink it