This is just my own opinion, if I was in your situation I'd ideally do what I can to make my life full and interesting without him. I'd tell him that his first relationship needs to be with himself and not the bottle and that he needs several years of sobriety under his belt before I'd even consider being in a relationship with him again.

I'd also hopefully be in therapy myself to make sure I get regular reality checks.

You deserve to be safe and to be treated well.