I second what LTD said. There's that saying, something about if you don't love yourself no one else will love you? He doesn't love himself, otherwise he wouldn't be hiding his true self behind alcohol. So therefore he truly doesn't know how to love anyone else....alcohol is easy to love-it doesn't nag, it doesn't demand anything, it just gives over and over and over. It's an addiction that unless you, yourself are an alcoholic we will never understand. It's just up to us to try our hardest to take care of ourselves first. We cannot "fix" them, and we certainly can't make them choose us over alcohol unless THEY are ready to do so. But try to remember it is NOT YOUR JOB in life to fix him. And...to be blunt, you can't. No matter how great a person you are. there's abook -a short one, called "Understanding the Alcoholic's Mind" by Dr. Arnold M. Ludwig. It may not make you feel better, but it really helped me see things from a very different perspective. Alcoholics may want to stop, however sometimes they simply just don't have to tools to figure out how, or its just not priority..whatever the reason...and of course its easier to stick with what makes you feel better at the time. Do whatever research you need, just don't focus too much on him. Begin to take care of yourself.
best wishes to you.