Welcome TheHopeful - lots of great responses here. I would add that for me it was also a decision that I finally had to make myself. There is nothing anyone could have said or done that would have "made" me quit until I realized what I was really doing to myself and those around me. He's lucky to have someone so supportive sticking with him throughout all of this, but I think you do need to take some steps to protect yourself too - and prepare for the possibility that he many never stop.