I will be as honest as I can. Depending on how you look at it, there should not be anything to "cope" with tbh. I don't mean to sound minimizing, I do understand how this may strike you as prejudicial but can I try to elaborate?

So someone has said they are not attracted to you physically and you believe it is because of your skin color. Ask yourself, did they in any way imply that it was anything but physical appearance and if so, does not the person who chooses to date you have the right to pick who they find attractive in this way? True it still hurts to hear someone say anything about us is not attractive to them but I feel that if it had to do with anything but your skin color you might not have had as much of a problem with it. What if it was that you were too tall, too short, too thin, your breast size, hair color or any other non skin related thing? Would that not be entirely normal for them to have preferences? For this reason in the way that it was stated, they just simply are not attracted to you and if it is that they don't like black girls, so be it. I am half Japanese and don't particularly find most Asian women attractive, but that, is not a racial judgment, more of a physical appearance thing.

I think the problem lies in that the world seems to want to make everything about race and makes anything to do with race illegal to say or comment on. While I agree any judgment based on character quality or behavior related to racial things is wrong, I do believe the world has taken things so far that as soon as anything related to it is mentioned, even as it may be innocent, we automatically assume the person is being racist.

Being attracted to, or not attracted to a certain race for the physical attractiveness is natural and normal.

Dont' take it personally, they even stated they liked your personality. Thing is, it's all well and good to hope that someone will love us or just be attracted to us on personality alone but in reality that rarely happens.