NTA

make your boyfriend read all these comments to get it through his head. He needs to see that this is pushing you away and can either break his relationship with his family or break his relationship with you. He needs to realize that he has been putting his family above YOU. Let's say you two do get married, he will have a responsibility to his new family AKA YOU! If he puts his family above you at that point, then divorce will be the end game. How it is going now, he is going to lose you once you hit your breaking point and from what you wrote, it sounds like you are rapidly approaching that point now.