What do you get out of this relationship now?. Is this really the life you envisaged for yourself?.
Have the scales finally fallen from your eyes?. This was anyway never going to end well and he also lied to you about divorcing. He has and will always put drink first; his primary relationship is with drink and alcohol is a cruel mistress.
No such thing as a borderline alcoholic; you either are an alcoholic or you are not.
Alcoholism is truly a family disease.
The 3cs as always are prescient in such dysfunctional relationships:-
You did not cause this
You cannot control this
You cannot cure this
His primary relationship is with drink and the man is too far up himself to even bother to obtain a divorce.
You need to ask your own self some harsh questions as to why you stayed for this length of time at all given his behaviours towards you. I am wondering if you grew up with similar.
I would also now address any co-dependency issues you have; you may well have confused "love" for this and you have acted out the usual roles associated with non alcoholic partners (enabler, provoker to name but two). He has never behaved in any sort of a loving way towards you and you simply hung on in there in the hope that he would change. Well he has not and he will not; any change has to come from him and he alone and he simply does not want to change.
What this is currently is an unhealthy co-dependency between the two of you. This relationship is well and truly over now.
Cut your losses now and leave this man behind before you get even more over invested emotionally or hurt.