This is none of your doing! Please don't forget that. He is where he is because of things he has done, choices he has made. Addicts know exactly what to say to get us to do what they want us to do and most of the time it is things that really aren't good for us.
You have a choice of whether you allow this to continue to affect you or to get on with your life and find some peace. Al-anon, counselling and this site have helped me get into a position where I can find at least some peace every day.