Lost

Hey everyone. A summary if what's going on. My husband and I have been married since 2010. He got sober 2013. After a separation. 2018 a new person starts at the prison he works at and he starts an emotional affair. 2019 physical affair(not confirmed but likely) dec 2020 we start a polyamorious relationship with said woman. Oct 2021 she leaves us goes back to her husband. Nov 2021 husband starts drinking again. Dec 2021 shit hits the fan. My family and I stop talking, our kids (step kids- we each have one) stop talking to us because my husband can't control his damn mouth when he drinks. Husband gets in my face yelling screaming. I attempt suicide. Was stopped. Jan 2022 started cutting. He still drinks and puts me down every chance he gets. Starts working 3days of extra OT at work. (She no longer works there) he starts talking to her again because she told him she was diagnosed with bipolar and cut herself. He ignores me, our marriage his mental health and mine and immediately forgives her for leaving and making him out to be a monster. I defend him to everyone including her and I get shit on. He tells me a week ago that he his leaving feb 1st to move closer to work "because he needs to be alone". Half a block from the woman above. He is back to deleting messages, emails etc. Hiding phones calls. I am not in a place where I can handle all that again mentally. I'm losing....sorry lost my best friend, husband and security once again. And now hes moving out. Tells me to commit myself when I email him about what I've been feeling and being honest with him about everything that's been going on the last 2 months. Basically calling him out and then telling him how it has affected me, him and our marriage. The woman tells him to quit drinking and supposedly he has.. like seriously??? She's the reason he started again in the first place. Now he's off the next 3days and I unsure I will be able to handle him being here. Will we fight? Will he drink? Will I cut? Will my anxiety stay calm? Can I be who I need to be to support him and stay healthy for myself as well? I need help. What should I do??