This guy is controlling and incredibly possessive and it has gotten to the point where I cannot take it any longer. However, he is threatening to kill himself if I leave him. I know that this is most likely just another way to control me, but there's always that "what if" in the back of my head. What's the best thing to say to him? I want it to be short and sweet, cause he's gotten really nasty and I don't want it to drag on.