Apryl,
Boy have you received some wonderful advice here. I hope you read it.
I have nothing to say about your boyfriend. Sounds like a run of the mill drunk/addict to me.
You, on the other hand need some serious help girlfriend. I do not mean to be harsh at all. But seriously, do you think a normal, healthy person would do what you are doing? Please seek out some help for yourself.
Alanon is wonderful and free. I am sure there are other groups as well. Talk to a therapist that specializes in codependency and lack of self esteem.
Stop focusing on him (as you can see he is not as worried about this relationship as you are) and focus on YOU and your recovery. :ghug