Is it normal that i only seem to be attracted to east asians?

I am some kind of mixed Afro-Caribbean black person with some European blood. The best of my friends are mostly Asian, because I feel more willing to be friends with Asians relative to others. and sometimes, I'm interested in Asian things/culture. As I walk down the street if I see an Asian guy that looks cute or hot enough (and I find a lot of them so) I get nervous and feel butterflies in my stomach - maybe a hint of arousal too. When I look at pictures of male models, I could never feel as excited as when they are Asian, or look Asian enough. And the only porn I can enjoy is exclusively Asian or Hentai. On a more worrying note, I feel uncomfortable around other black people, and sometimes annoyed by our typical physical attributes. But even still I feel uncomfortable when I go to the Asian part of town - feeling out of place and feeling/knowing that the people don't want me there, no matter how good my manners and behavior is and no matter how respectfully they may treat me. All of this along with the fact that I'm heavy and that there are so many other pretty women out there makes my attraction to Asians feel like an uphill trudge. With most of them being smart, beautiful and talented, I feel that Asian men are all that and a box of Pocky.