Welcome to SR. I am fairly new here too. I've been reading a lot, the stickies on the top are filled with great information. I have been where you are, you will find that so many of us have the same story. You are definitely in the right place.
You are here because you are clearly uncertain and confused by this man's behavior. I've learned that what they say means nothing; how they behave means everything. What does his behavior tell you?
Keep reading and posting. There is a lot of wisdom and experience and support here.
I moved in with my ex ABF (ex-Alcoholic Boyfriend), almost lost my mind trying to reconcile what he said with what I saw with my own eyes. Thought my "support" and love would make a difference. It didn't. I left finally, it was so hard. Six months later, I am feeling better than I ever have before.
Alcoholism is a tornado that destroys everything in it's path before it's done. Thank God I got out of the way before it destroyed me.