I just wanted to clarify that DH has never ever threatened to kill himself if I left. Not once. But because of how depressed he can get, and how he acts when the bipolar is at its worst, I suspect that if I left, he would see no other alternative. Not because he is necessarily wanting to blackmail me, but more of a case of "There's nothing left....why bother?" If I ask him about this directly, he will always deny it. But I know.