Public beauty or private beauty

Yue asked me if I prefer a girlfriend who is pretty in the day but ugly at night, or ugly in the day but pretty at night. Basically, is it better to be beautiful in public or in private? First of all, I wonder why she can't be beautiful both in public and private! Incidentally, Lee, Wei, Jong all chose to have public beauty. But I think public beauty is superficial - it is for showing off. A girl who's beautiful in private has true beauty, in my humble opinion.

Wei seems surprised that I care about personality. And why not? But then, perhaps this is the age when personality is secondary to beauty.