I think they are great, as I am currently in one

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I am a white man who has been dating a black woman for almost two years now. We have alot of shared interests and activities.
Sometimes we get flack from ignorant people, but for the most part, people around where we live don't bother us. I hope that someday this will be a non-issue, other than people seeing differences as interesting, not as a problem or something to hate.
I think that if two people can find each other, relate to each other and love each other, then that is more than most people in this world have!

As far as your question goes, I would say that the reason that there have not been alot of black woman/white man relationships (at least, not historically or out in the open) is that there are alot of stereotypes about each, and sometimes people cave in and are not willing to deal with whatever prejudice is thrown their way, in order to be with the person that they care about. I work with teens and I am always hearing their opinions as to what I am like (usually based on nothing more than my appearance), what type of music I listen to, what TV channels I watch, etc. I can only imagine that the same is true for other ethnicities, as well

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