If a white man wants to date a black woman, my suggestion would be move to Detroit. He'll have no problems there! LOL
As to weaves, I advise white men to not say anything about it at all and if you accidentally pull it out expect something akin to a near death experience.
Finally, I would say that a lot of racial problems in America are actually class problems but that's a big taboo to address. I grew up in Maryland and at one time was dating a black woman who had grown up in Connecticut and was the daughter of a doctor. I used to tease her by telling her, 'ya'all just a Yankee girl!' Which of course she was!