So i've ruined my relationship with my girlfreind?

next thing you need to do is when you see her apologize for going off like that. same with the parents. calmly explain that black people are just as good as white people and yes, all types of people commit crimes. sadly its true that more black people gang up, but more white people are usually pervs and pedophiles so yeah. but dont get into a black-person white-person fight. dont mention anything negative of white people for that might set off a fight. see if you can make them understand that ur a person and its offensive to have heard all that. if they don't understand or the girl friend sides with them don't go begging, it may be better to just walk out. remember that you deserve to be respected by you friends, lover, and there parents. thankfully there are many non-racists and your bound to find someone. apologize and try to see if they'll exept you. if they dont, move on from there.