Honestly, unsure. I dont think that you have a particular obligation to have sex with any sort of person, and I do think that you have an obligation (not necessarily a legal obligation, but a “being a decent person” one) to not be racist. It isnt exactly unusual for a person to prefer their partner belong to a specific category (for example, a gay man is likely to refuse to consider being with a woman, but I dont think they would be a misogynist for that). That being said, there isnt a particular difference between all white women and any other sort of women that would make for much of a reason to do this beyond just hating white women in particular, whereas for a woman, there is a notable difference between a man and, for those who would be attracted to them as well, a woman, as far as partners goes, because with a man, there exists a possibility of pregnancy, which could be dangerous in the current state of the country.
honestly, you dont really come off as one to me, so I wouldnt worry, you come off more as someone who might have slightly different definitions or ideas regarding ethics, which can be mutually frustrating to argue around, but not the same as being malicious