Alcohol…

Hey everyone, I need abit of advice and I don’t know where to turn.. so long story kinda short! If you make it through all of it THANKYOU 💗.

So Ive been with my partner 2 years, I have a 5 year old from a previous toxic relationship, now I knew my partner I am with currently has a past involving drug (cocaine) & alcohol.. he is a year younger then me I’m 27.. I have a past when I was a teenager and he proved he had changed in terms of drugs so I thought I’d give it a go, anyway drugs ain’t the issue it’s alcohol… everytime he drinks he can’t have one, he gets hammered, everytime he drinks he treats me like shit and leaves me etc… I am 7 months with not a touch of alcohol as it would make me verbally nasty and affect my parenting, I have a issue with alcohol as I grew up with a alcoholic parent … the thing is my partner doesn’t thing he’s got an issue… doesn’t see what he does as an issue.. I’ve explained it’s either drink or me and my kid, and he’d rather go to a all paid expense Christmas party…. What do I do? I feel like it’s talking to a wall