Do they really not know? I know a friend of a friend who is absolutely stunning - tall, slim, perfect complexion, naturally curly waist-length hair etc. Men go gaga over her, but she always seems to be surprised when it's pointed out.
I just don't understand how someone can be that oblivious. We live in such a looks-orientated world, and people who don't meet the approved standard are certainly told about it often enough. I tend to think that everyone has a good idea of where they stand, and if they say otherwise it's because they think it would be seen as boasting or a lack of humility.
So does anyone know someone who appears to be genuinely unaware that they're gorgeous? I'm sure I've seen a few examples on threads of "my painfully handsome DH who looks like a long-lost Hemsworth brother thinks that all the women throwing themselves at him are just being friendly and he's bemused when I point out that they're coming on to him". Are they for real?