What does your heart tell you? It's usually correct.
If a gay man won't date a straight female, is he sexist?
If a straight man isn't attracted to another man that likes him, is he homophobic?
If a black woman isn't attracted to white men in general, is she racist?
If a white man isn't attracted to Koreans in general, is he racist?
If someone won't date obese people, are they shallow?
What about women who identify with being male that will only date gay men? Are the gay men that won't date females who say they are males prejudice and/or sexist people too?
Is attraction even a choice? Most people say it is but, they're wrong.
Beauty is and always will be in the eye of the beholder. What I find beautiful is not at all the same as what other people find beautiful. I think the Isle of Skye is the most beautiful landscape I have ever seen. Someone else might say it's Peru. Another person might say Yosemite National Forest in California.
I've yet to find a person who completely agrees with me as to who I find attractive or not. It varies from person to person, the same as taste in movies, music, culture, scenery, architecture, etc. To each their own. If someone wants to sell themselves short by not dating one demographic or the other and they base that decision on nothing more than skin color, that's on them. Sucks to be them, too. I for one love the fact I am attracted to every type of woman under the Sun.
To go even further, if I found an alien from another planet attractive, I'd date her in a heartbeat if the attraction was mutual. If we fell in love I'd have no problem marrying her. If there was the chance we could reproduce safely, we would.
It's a weird conversation but I already know there are people who would never in a million years have sex with someone from a different planet unless they looked identical to people from Earth. So they say, anyway. Does that make them racist? I don't know honestly. I think it depends.
I'd say if I married an alien and one of my friends didn't like the alien as an individual, I would not consider my friend racist. But, if they didn't like my alien wife solely because she came from a different planet, that would be utterly racist. Prejudice only exists where fear exists.
I doubt this comment helped but, I tried. :)