I am sorry to hear that you are going through this. I just went through the worst of my situation. It is very painful to go through. You are at a loss as to what happened even in devastation. You never thought you would be sitting where you are right now. The thing that hurts the most are the unanswered questions.

From what you said, it seems like he does still care about you. He is just dealing with things that he chose not to deal with it. He probably held a lot of things inside and kept it to himself until it built to the point that he no longer knew what to do anymore, which caused him to have a total melt down. He has a very long road ahead of him to repair himself. I hope he gets help and talks to someone that can help him work through the original reason he is where he is now. There is a core event or situation that began all of this turmoil. It may have started before you even met him. Either way you are hurting and no one wins in a situation like this. I hope he finds some piece for what he is dealing with and it will take time but you will heal from this.