JW - Welcome to SR and I"m sorry you're hurting.
You don't describe your relationship, but I suspect that if he's indeed an alcoholic, it might look like the others described on this board. If that's the case, please spend some time reading our posts and if you see yourself in them, thank him for setting you free to find the love you deserve. Easier said than done, I know.
I have had no contact with my AXBF for most of this year. Like you, I'm hurt, obsessed, angry etc. Despite my broken heart, today I feel more at peace.
In the meantime, please come back, keep reading and posting. I know others will be around soon to share their wisdom soon.