If you continue in this relationship, you will come second to alcohol.
He has shown you this already. Ask yourself what you are getting out of the relationship. And are you prepared for it to get worse? Cause it will, you know. It never gets better, only worse. I don't think I could stay with someone who treated me so badly. I'd rather be alone than to be treated badly.
A long time ago I ended a relationship with the 'love of my life' because of drinking and abuse. I got over it after a while and then my life got better and happier.