If you believe he will "snap" to the point of killing himself, then what is to stop him from "snapping" and killing you first. I don't mean to scare you, but this sort of thing does happen. My mother wanted a divorce from my father and he decided to hold her hostage and play Russian roulette with a loaded gun. He lost, with the bullet to his own head, not hers. Get out, get a restraining order and get your life back. PLEASE!!!!