I am having a problem with the tables being turned on us part. This happens to us men everyday!
Look at women in general, when single they take care of themselves and wear nice things. Once married its jeans and a tee shirt and weight gain. I did not marry that but love her just the same. I married a sexy demur lady who is now a soccer mom. Heels and dresses are in the back of the closet and jeans, flipflops, sweatshirts up front and worn.
Women cross-dress everyday, don't wear makeup like a man, get short hair do's to make it easier like a man.
I understand the the sexual imagery part trust me all men do, as I look back at photos from 15 years ago we both look allot different and "LET GO". That is not sexy!
Ok my part here is to say you love the person and the heart not the clothes and physical appearance. If your relationship is one of skin and skin deep you are in trouble already and this will kill your relationship.
I love my wife very much and If something happened to her to change her physical appearance or disfigurement I would love her still.