Dr. Phil, whom I admire, says there are "stages of readiness". You can google this. The addicted person quits when they work thru these stages. Basically denial, anger, acceptance, change or some variation of this. The boyfriend who quits because of the girlfriend happens to be at the stage of readiness for action. This is the point they are at with their addiction. If your boyfriend is not at this stage, it is not your fault. It is the point they are at for themself. We can only work on ourselves. If you are not being treating properly, you need to work on your situation. Best thoughts to you. Addiction is a sad way of life when not managed. I am sober and happy. But only because I decided to get sober.