Hi op!
I'm not going to pile on as it sounds like you want to change but don't know how.
9 years is a long time to be with someone who doesn't fully want to be with you. Look how much time he wasted for you.
I believe as someone posted earlier there is an element of trauma bonding.
I also feel like he fills a gap in your life, no matter how bad he is, better the devil you know eh? Because I suspect without him, you'd feel very lonely?
Often on these threads, people are asked to look at their parents relationship and their relationship with their parents. What did you learn about relationships as you grew up?
I sort of get rescuer and people pleaser from your words. Can you recount any situations that taught you that you must put other people first and you second?
Can you flip that on it's head? Why must you always come last? Why are you not putting yourself first. I saw you are awaiting therapy but if you have a google, some youtube videos may come up on these subjects you can have a look at.
Have a look at chump lady too. Have a look at the book mr unavailable and the fallback girl.
Lastly, whether you are with him or not right now, I think it's of great importance you start to build a little life for yourself.
I seriously think as you admitted earlier that you don't have friends Etc. In your life and he probably fills a pond in very big ocean.
Start off little and steady, find some free things to do. Find out your local clubs and go along to a few, even if it isn't normally your thing. Who knows, you may love it. It will get you out of the house and you may meet new people through it. There are two apps you could use to meet friends one on one, platook and bumble (this is a dating app but the other part of it is to meet platonic female friendships)
I aren't going to mention dating as I believe it's you that needs work to get healthy for your own sake before you let someone else in. I suspect this guy knows you will put up with anything so he doesn't unfortunately respect you and he treats you exactly as and when he wants.
I can't wait for the day when he gets the shock of his life when you get stronger and turn around and say no more. I suspect you will feel a bit stronger if you build up a life for yourself so you are no longer just waiting on him.
Sorry for the essay.