Should I feel guilty? No. As palmer pointed out, as long as I'm dating that person for the right reasons, there's no reason to show shame or guilt. Love isn't a disease. It's a chemical and psychological response based on your personal feelings toward someone you find beautiful.
For some reason, people get the impression that attraction = exclusive attraction. That is not the case whatsoever. None at all. In my case, I do have a preference towards white women, but I'd be a damn fool to not recognize beautiful women from all spectrum of life. There are black women whom I fancy, as there are Latino, Asian, Middle Eastern, Native Indian, etc...etc...etc...but all in all, I often gravitate more to white women and it has more to do with common interests and not too much of being WHAT they are.
I guess I am saying that in the end, you need to realize that you must love the person as a individual, and not because of what they are. I did a video mentioning this anyway, so perhaps this could shed some light.
[YOUTUBE]e1-1ROkzc34[/YOUTUBE]