from my personal experience, it's been more about inferiority than racism. of course, racism is always a given so we can just put that on the table and accept that as part of life.
back to inferiority, it's like how i would get some grief from asian women harping on me about why i married a white girl like i'm thinking asian women aren't good enough or of the like. there's no winning. if i say that's not the case, then they say why didn't you marry an asian girl? and we go round and round in circles of useless debate.
i get the same from some of my asian guy-friends when we see an asian girl with a white guy, or even worse when she's with a black guy. i think it's great to see that mix-up, but my asian guy-friends freak out; they don't freak out at me and my white wife.
so, i think it's an inferiority complex. kinda like why you taking our women, or why you taking our men. kinda like when black women freak over a black man with a white woman.
it's all stupid. just live your life and love the one you're with. of course, some of us are more attracted to other races than our own. i won't get into that debate. we'll save that for another thread.