plus, people become more attractive to you as you get to know them and like them - it's almost as if the internal beauty shines through, whereas the internal ugliness can shine through as well, marring the physical external attrativeness.
My ex-husband was not physically attractive to me when I first met him but his internal qualities began to shine through almost immediately and I came to view him as very "hot." Unfortunately, the opposite seemed to be true for him, i.e. I seemed very "hot" to him at first and he was drawn to my attractiveness, but after two kids and some years of marriage, he was looking around for other "hotness." Why does sound like an old country song?