Oh Hun I am In tears for you right now. I Lived with a drug/alcohalic for a time. He didn't think he needed help. After trying and trying I Left him and didn't look back.
I didn't have any children with him.
I went to Al-Anon for a time to help. It may be very helpful for you also
here is a website you can find meetings.
http://www.al-anon.alateen.org/
I am keeping you and your family in my thoughts and prayers. Bless you all.