lawinct....reading "C0-dependent No More", as others suggested is a very good idea, I think.
I also suggest that you read all of the "stickies" that are listed at the top of this Friends and Family of Alcoholics page. Especially the ones in the section of "classic readings".
This is a virtual "crash course" in alcoholism and co-dependency. Most any question y ou have will be answered within these readings.
The reason that I say this is: Knowledge is always power.
And, also, you are going to need to know what you are up against if he were to return to drinking, again. You are going to need to know what to do (or not do) in either circumstance---whether he drinks or not!
I hope you find these thoughts of some help....
Please hang around and let us know how y ou are doing. There are lots of personal stories of others who have been in your shoes for you to read....
dandylion