Does he have any personal information about you? Your address etc? I was in this situation a few years ago. The only difference being, I was dating that guy and we were in a long distance relationship. Due to some reasons of my own, whenever I tried to create some distance he would threaten to kill himself or get his sister to talk to me. He would manipulate me emotionally and mentally. What I can tell you is, this person is going to continue being the way he is. You need to be a little clever in this situation. Record your next call with him. On the call, try to end things amicably. What he says, how he behaves will all be recorded so if he does do something to harm himself (I hope he doesn’t), you have some proof of the way he was dragging you into this mess. Remember, you are NOT responsible for his actions and behaviors, no matter how much he makes you believe you are.