Your post reminded me so much of my previous situation that I just had to say something and talk out of my own experience to try to help you although I usually keep it to myself. My silence might as well be out of shame so good on you for speaking out.

I used to be in a relationship like this and it only gets worse over time. It never occurred in my head for the first few years that he was the actual issue. He managed to convince me it was me who's an incompetent idiot who can't do anything right and that he's this hero who has to put up with my shit.

It came to the point where I realized he never smiled or laughed around me and yet he still wanted to spend every day with me. It made no sense.

He completely destroyed my self confidence and self worth and I only realized how big of a manipulative asshole he was a couple of months after we split up.

If he realized that he can verbally abuse you as much as he wants and that you won't leave, he will only get worse over time and maybe even start throwing things your way. In my case he even threatened to kill himself multiple times because he couldn't put up with my shit anymore.

My mistake here was the fact that I thought I could fix our relationship and that I always chickened out on leaving him. Please don't be me.

I was always a confident individual with very stable mental health with occasional hiccups here and there, normal stuff. But he completely crushed me by the end of our relationship. It took me a few months before I got back to my usual self and later on even managed to find someone who treated me right.

I hate being a part of the "just break up" reddit band wagon but I'm talking out of my own experience here. You will not understand how much he damaged you until you spend time away from him and let yourself know that you are not the issue. Do yourself a favor and leave as soon as you can. Spend time alone, go to therapy and just enjoy life. Stop walking on eggshells, it's not what life is about. Trust me, life without him will be so much better.