Umm... white, male, and 19, since you wanted that.
I guess I'm just echoing some of the previous posts, but I think that you shouldn't have to taboo a relationship over something like skin color. If you prefer to not date outside your race, then no-one's forcing you into anything. The main point is that it's a personal thing above all else, between you and another person.
I will say, however, that if you date someone with different cultural values and such, that you should do your best to respect those values, and vice versa. We can say that differing race doesn't matter, but it does matter, for different reasons. The values that a girl (or guy) carries as a result of her culture or upbringing are part of her, and so that's something you need to pay attention to.
As for your friends, it's probably something they've never really given much thought to, so I don't think you should hold them to what they said unless they keep bringing it up. Some people have surprisingly conservative values in certain areas, but that doesn't make them bad people. It's just one facet, and unless it's deep-seated, they probably don't really care that much.