There are books/comments from playmates that describe the sordid life of Hefner.
BUNNY SPOILER Sordid confessions of Hugh Hefner’s Playboy Bunnies
https://www.the-sun.com/news/1545461/sordid-confessions-playboy-bunnies-hefner-mansion/
Former bunny Kendra Wilkinson revealed on ITV’s I’m a Celebrity… Get
Me Out of Here! that she slept with Hefner when she was 18 and he was 78.
Writing in her book Being Kendra: Cribs, Cocktails, and Getting My Sexy Back, she said: “I had to be very drunk or smoke lots of weed to survive those nights – there was no way around it.
“At about the minute mark, I pulled away and it was done. It was like a job. Clock in, clock out. It’s not like I enjoyed having sex with him.”