Finally see my fiancé’s bs clearly

So partner who’s meant to stop drinking went to watch the game with a few mates, told me he wasn’t gonna get wasted, he’d be back straight after the game and to stop treating him the same cos his ‘different’ now blah blah blah .

This dumbass comes home wasted in the AM! Now I’m so disappointed with him, ESPECIALLY when the last words outta his mouth were the complete opposite of what he done, n to finally see things clear that is the type of thing he always does! I’ve had enough of his games and everything else, I’m about to have a good talking to him but he see’s absolutely no wrong in his actions and will make it seem like I’m overreacting & crazy over something he see’s so small & stupid, but to me it’s a deal breaker. Any advice ?