I have not done this myself, but if someone tried to do that to me, it would not fly. One of my exes, when I was breaking up with him, threatened to kill himself over it. I still went through with it. I don't allow myself to be manipulated by such nonsense, and I would guess that most people are the same way. I would encourage you to see a therapist to explore why you get these urges, and to learn healthier coping mechanisms.