Print out what you wrote and show it to your therapist. My good friend spent 8 years married to an abuser. Nothing she did was ever good enough. Now my friend is happily single.

Please don't stay in that relationship, OP. Like PP said: you deserve better.

You deserve better OP. Read that again and say it outloud. I hope you believe it because it's true. You deserve better than this abusive man. I don't believe his core will change, and a life time partnership or marriage is a long time.
There will be stresses in your life together.
How will he handle those? You deserve someone who would rather cut off his own arm than intentionally hurt you. You deserve someone who cherishes you. It exists- I have this with my husband. I was no more deserving of a kind and loving man than you are. Good luck.

Relationships are supposed to be easy.

Your mate is supposed to be your shelter from your storm. Not the storm itself. Your home should be your sanctuary from a crappy world. Not the place you walk on eggshells.

And you don't/can't fix a man. As it is in the beginning, it will always be. Find one who fits with you right from the start. You deserve it.