I thought I was perverted when I secretly showed nude photos of my young bride to my Fraternity Brothers in college.
But I eventually learned that Candaulism [look it up] is a common fetish.
Back in the 50's, naked crotch photos were rare. Kodak censored such photos.
I took to sending in naughty film for development, because it aroused me to know that strange men were seeing photos of my wife's naked c***, even though I never got them back..
Then I got a home development kit and printed my own photos. It was a thrill to show tasteful, "art" poses at my Fraternity.
Then I took my wife to a Frat party and she saw photos of herself on a bulleting board. At first, she was embarrassed and upset. But I assured her, it was just 'art" amd my Frat Bros appreciated and respected her. She figured, they've already seen her nude, so more doesn't matter. She gave permission to take more photos and share at the frat.
Then a h**** guy requested Full Frontal photos. My wife surprised me by agreeing. She had not only got over her embarrassment, but seemed to get aroused by the male attention. She posed and I shared many more photos of her full frontal nudity.
Female Exhibitionism ultimately became our life-long hobby.