Quote: Then it's not so much like looking at cars anymore, is it? I guess I just thought part of being true to your spouse was not fantasizing about other people
I dont know how this fits in with your question but had to add what is another factor for me looking at other women.
I don't look if the pictures are professionally posed like on covers of magazines. I look for some that look amatureish and they usually are couples. Some are of people that do not have perfect bodies but appear to be enjoying what they are doing together or alone. Some are short video clips you find free on the internet, put there by the participants. Kind of "look at the fun we are having." If it looks controling, hurtfull, criminal, I don't look. The participants have to appear willing and eager.
So why do guys look? Adventerous, voyeristic, resentment for feeling left out at home, no negative emotional baggage associated with the people in the video clips, take what you want (very limited though) and don't have to give back, satisfying a biological courosity? When you mostly get rice and beans at home and you know there is cake and ice cream down the road, it is very enticing to look at the cake and ice cream even though you were warned that looking would cause someone at home to have their feelings hurt.
Need more on this line of thought? I would have to think more about it. Ask a particular question if one item seems to interest you. I don't want this to be about only me. I am exposing some reasons why I look and assume other guys have similar reasons for looking. Your H may have different reasons for looking.