Sounds like an unbearable experience. I think you made the right decision to leave, because it doesn’t sound like anyone was going to give you the basic kindnesses you deserve. Your bf is also an asshole at the very least for getting mad at you instead of being understanding, given the fact his dad is a raging asshole.

I don’t think your bf loves you nearly as much as you do him, and it won’t get better, judging from his behaviour and the expectations his family set up. It’s probably best he becomes your ex, for your own well-being, because these people will only take your love for granted.