My mom is disgustingly racist what do i do!?

Well, she's not a true Christian if she is filled with so much hate against another race. Unfortunately, you will probably not change her biggot thoughts. The real question is - do you want to be with this guy enough that you disregard your mother's feelings? You obviously have been for the last 8 months & if you truly love him - It doesn't matter what your mom thinks. You are 19, old enough to make your own decisions. I would stand up to your mom, let her know about your relationship with the guy & then let her decide if she'd rather accept him, or lose you. You have to ask yourself what's more important.