Unless your character lives in a magical world populated by half human half dragon characters, then no. It will be cliche to find that there is another mixed species out there. If your character is more human than dragon with just wings, then they should date a human, If she is more dragon, then they should probably date a dragon.
Dragon or human would be more interesting as i think human and dragon is just wierd . Human/dragon isi more relatible and can be taken much more seriously. With human and dragon, it is just strange. Human or dragon can be taken further, and made more interesting and fun. Hope this helped.
A human relationship, everyone can agree with, but is kind of boring. A dragon relationship, some people may disagree with but it is more entertaining. But a half human/half dragon relationship is agreeable with since they are both technically the same "species" and it is still entertaining and could provide for a good story.