You enable him by staying with him. You are not a child anymore being stuck with an alcoholic father and suffering the consequences of your father's addiction. You have a choice now, and now that you are seeing this boyfriend is also an alcoholic WHICH HE IS, most likely a binge alcoholic, you can decide to rid yourself of this kind of problem when it comes to someone with this challenge being in your life.

I am sorry you grew up with an alcohlic father, it just sucks. However, you have a right to choose not to be in a relationship with this kind of person as an adult.