One time I threw my ex out he ended up jumping out a window with a heavy duty extension cord tied around his neck into a group of people. I felt SO bad until the doctor at the hospital they sent my ex to told me that his attempted suicide was just a ploy for attention. He said unfortunately sometimes they do die, but in NO way is it my fault. I finally left him 2 years later and since I've been out of his life he has attempted suicide 2 more times. Both because the women he is with have thrown him out. Nothing changes until they want help. You did the right thing. You made the offer, and he's not ready. This is not easy, but you made the first step.