So sorry you're feeling this way.
I wonder if someone else was treating you the way your RAH does would you still act the same way you're acting now?
Would you still be nice and do everything for them even if you're not getting anything back?
You deserve the equal respect from any person you come accross in your life regardless of your feelings for them. An you get respect by demanding it, otherwise you don't get it.
As for you RAH he'll either snap out of it and stay on the right path or not. Either way yours putting up with things you don't like won't make any difference.
I hope this doesn't sounds harsh, I'm only talking from my experience. take what you like and leave the rest.
I wish you well