My ex is threatening to harm himself or even take his life. What do I do? I do not want to be the reason he takes his life. I don't have proof of this how do I tell someone that will help me? What do I do? Help me! This is totally freaking me out.

First why is he doing this, is it merely a threat that he will kill his self if you don't come back?

If so, it is just a trick that many men use to control a women, it is a form of mental abuse against the women.

Does he have any history of mental illness, has he tried to hurt his self before.

If this is because of a break up, call the police and tell them, but break contact with the ex if this is a control method,