Cherbear
I can't add anything new to all the wonderful advice/suggestions you have already received from the rest of the group.
I especially agree with the fact you must first take care of yourself and your children. Don't waste your time trying to help him because only he can do that.
I am so sorry that you and your children are having to experience this.
My son is the addict in my life and has relapsed many times. The longest he lastest was 3 years.
I'll pray for you, your children and your ABF.
Hugs, Devastated