Black girls: Who approaches you more, Latinos, Whites or Asians?

I didn't include Black because I think too many answers would say "Black" since that's pretty obvious, lol. Anyway, i'm trying to figure something out. I met this White guy today, and I don't understand why White guys ask me out more than Latinos and Asians almost combined. I like Latino and Asian guys, so if one looks at me its not like I give off a vibe of being icy or mean. Today there was this Asian guy at Knotts and I noticed him looking at me, so I looked over at him and our eyes met and I think I gave a slight smile too ... but that was it. He didn't come over to me or anything, even though he was looking at me first. The White guy hit on me after the Asian guy thingy so I don't get it, I don't think I looked bad or anything, apparently he didn't think I did either so I don't get this. Now I'm wondering what other Black girls experience when it comes to guys. I really have no problem attracting Black or White guys. Other races seem weirder towards me. Sadly... *sniffles* even Latinos. :(