hi jenny, welcome to sr.
i agree with the others, you are definitely doing the right thing in my opinion. according to your post, imo, he is an addict and unles he seeks help for himself, his addiction WILL get progressively so much worse and nothing you can do or say would change make him stop. its up to you whether or not you allow his addiction to drag you down with him.
focus on you. have you read "WHAT ADDICTS DO", its a sticky at the top of the forum page. agan keep the focus on you and your life, you deserve more than he seems to be able to give right now.