Not to pile on and make AG feel worse, but there are plenty of biracial and bicultural couples out there.
She was incredibly hesitant to put the relationship on Facebook, and I remember specifically her mentioning that her parents didn't know about us yet and how she was concerned about how they'd react. My moms first question when I told her about the girl was "is she legal?". Both my parents had issues with it too, but never really said much. My sister dated a Hispanic person for a while too, and when I brought this up as a potential reason, she said that she always believed that's the reason why her relationship ended suddenly too.