I can see your dilemma. Have you tried talking to your boyfriend about this? That would be my first suggestion. You'll never know what you might learn or understand about the situation if you don't have a conversation about it.

If you're so exasperated that you felt you needed to write in, perhaps you have discussed it with him and he's resistant to your suggestions. The truth is, as I'm sure you know, your boyfriend has a right to dress however he pleases, but that doesn't mean you're going to be attracted to him that way. I wouldn't call that shallow. I'd just call that one of those Homo sapiens mysteries. Who knows why a person is attracted to one look over another?

If you do love him, you might try to find a way to overlook the visual divide. If you can't accept him the way he is, however, it might be best to move on. Bugging him about his dress is unlikely to make him change and may actually have the opposite effect.