From reading this forum and others I have seen the same posts over and over. Men lose attraction because the DP/DW puts on weight or ''lets herself go'' in other ways, it is almost always physical. Women lose attraction because their DH doesn't remember birthdays or anniversaries, doesn't take her out, doesn't compliment her, doesn't have regular conversations, doesn't appreciate her work around the house, doesn't make her feel special, doesn't spend enough time together, doesn't help around the house .... of course many women also dislike it their partner getting bald or fat to some extent but it seems to be a tiny, tiny part of it, especially when compared to men. I've never heard a man say he can't have sex with his wife because she doesn't take him out to dinner or doesn't feel she is thankful for the paycheck he brings in every week.
I guess what I'm asking is why is attraction or the loss of it in a LT or marriage so different for men and women?