I don't know what else he put you through so I won't say he is an abusive or controlling person but his constant threats of suicide if you left is controlling behavior. It is actually very unlikely he will follow through. He just wanted to make you stay with him and keep him up. If you really need to make sure he is ok, I would recommend you do so without letting him know you are so he actually gets on with his life instead of thinking he can still manipulate you.