I guess it is different for everyone. From experience with my ASister, she blamed others, made many promises, very unreliable, lied, manipulated and caused destruction in many peoples lives.
I really think though, that when she is drunk, she talks her own truth. Her own language if you know what I mean. To us, it is crazy stuff. I guess if I were intoxicated most of the time, I would talk alot of crap too! I dont think the norm would or could be expected to understand this madness. As hard as it is to hear what he is telling you, the actions he takes, you have to make a hard decision. Will you continue to live this way and screw your own mind up or take a step to work on your own life. Im not sure I could really live with an alcoholic. I guess Im too selfish because I want to enjoy my life, not second guess it all the time.
Good Luck