He prob. did want out of the relationship, but he wanted out because he didn't want someone to get in the way of his drinking. It has nothing to do with the person you are, it simply has to do with he doesn't want someone telling him not to drink. He has one love, alcohol, and anything that gets in his way of getting drunk is a threat to his one love and is seen as the enemy. It is nothing personal, even though I know it is hard not to take it that way.