hmm there are two sorts of looks, ones that you manage and ones that you cant. You can manage whether you are a couch potato with a fat gut but you cant control your height or complexion. Aesthetic sense is part of nature, however i think mannerism makes more of mark in married life than superficial beauty. A guy or girl can be exceptionally good looking and terribly selfish or cheats in which case the beauty would be useless. However a person can grow beautiful in your eyes depending on where your heart is. I personally consider looks secondary to personality.