Your boyfriend is an alcoholic, and you are enabling him. Asking him to get counseling is neither here nor there. You are the one with the problem, since you’re choosing to live with a guy who drinks so much he can’t remember what he said or did the next day, and he doesn’t treat you well.
It’s time for you to get out of the relationship, attend some Al-Anon meetings for your help and support, and start looking for a man who is healthy. When people have problems that they don’t take care of, it’s often because they don’t want to.
Stop being wrong, and do the right thing. Break up, get help for you, and move on with a healthy, happy life.