Why is it that when to comes to White Male + Asian Female couples, it's always the none Asian woman who are so threatened and outraged?

Whenever I meet another guy of any race and the topic of Asian Woman + White Male couples comes up, they always have a response along the lines of "Lucky guy, Asians are so hot" or "I wish I had an Asian wife".They pretty much don't care or are even a bit envious, but it's always positive.

But when I overhear a woman talking about the topic in some way it's always negative. "That ugly Asian girl" or "That guy was desperate", "Couldn't get any other type of girl", "I don't get why hes with her" ect...

What gives? Why is this such an issue to woman or other races?