I feel like I’m at exactly the same place as you right now. Its so hard to stick with what you know is right once you decide enough is enough as either they come crawling back with the sorrys and empty promises or you literally cant help but beg them to come back and stay as you feel so lonely and worthless without them there or at least that’s what usually happens for me. I’m 24 hours into zero contact on my part now and it’s killing me as I could so easily reply to him as now he’s realised I’m not arguing or giving him anything he’s wondering what is going on. The more I have looked at all the things they do they are just complete narcissists whether that’s the coke making them that way or just how they are I don’t know but please be strong I know it’s hard but you’ve got this Stand your ground it could be the kick in the bum he needs to get sorted or wvwn just the kick in the bum u need to be finally free from the torment xxx