Guys, why don't white guys try to flirt with me?

When I go out, only black and Hispanics flirt with me. White guys don't even look at me. Don't get me wrong, I don't have a type, I like all types. The thing I don't understand is why don't white guys try to flirt with me, if they do.. they'll get their friend to talk to me first. Same with Asians. Are they only into they're own race? I want to experience more, but I don't want to look like a dumb ass trying to flirt with a guy that I'm trying to "get to know" and he is giving all these weird signals. I am Hispanic by the way.
Guys, why don't white guys try to flirt with me?
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