This is a touchy subject: your significant other hates your family and vice versa. What do you do? You are not going to like this (probably) but if your family hates your partner and he/she is not willing to work on it, you are wasting your time.
You have to remember that the person you chose to be your partner will be a part of your family and they should get along. Boyfriends and girlfriends come and go but your family is forever. Chose wisely!