Best friend's crush/close friend is racist against me!!?

Okay, so theres this guy who's been in love with my best friend for ages.. and I've known him for awhile, but we're not friends or anything. Since they are friends and I hang around they're "groups" a lot, I've tried to be friendly with him, but he's really mean to me! He's made up rude names, and is really mean to me, then claims that he accepts me into their group. Most of them do, but I doubt he does. My best friend and I were talking about it, and I came up with a list of reason, but the only one she agreed with was that he was racist. Honestly, I think he's racist, too! The main reason is because I'm Fijian-Indian, and He's white. (Not to be racist, I really do HATE racism with all of my heart cuz my parents are racist) Our other friends are mainly latino or asian, all of them fair skinned, so I'm the only dark one. That might be why, because I never gave him a reason to be mean to me. He's nice to ALL of our friends other than ME! My friend is close with him and offered to talk to him, even though I told her not to. Today, she says she kinda likes him back! And she's fine with us hating each other. The thing is that if they go out.. I'll around him a lot, since I'm usually with her. What should I do about this? I've tried to be nice to him and everything, but he makes fun of me! I can't have a facebook till I'm 18, but my best friend said that a month ago he posted something mean about me on his facebook! She yelled at him not to say that ever again or she's slap him, but he still calls me names behind her back! What do you think I should do about it?