The sex is not necessary, mere social interaction is all that is necessary, as I found out in 1997. In my case it was just Sunday bicycle rides and lunches. Sometimes all that is needed for a false accusation is the woman being the sole passenger in a car (or she’s driving and the man is a passenger. Being alone with a woman in an elevator or an office. Anything where it turns into he said/she said, and what he said matters not one bit.
While visiting a friend in another building at work, as the elevator door opened, he grabbed me and said 'Oh I forgot...'
Next he pulls me into the men's room and checks it out like in a spy movie!
The coast being clear, he tells me that the lone woman on the elevator was NOT female and would have us down in the personnel office, if I so much as looked at it!!!
This was a mega corporation, we would be toast, and we would not have been the first.
My Dad, when I went off to college, told me a story about being a teenager in 1950s nuclear family suburbia near a big city, but spending Summers out in the small town where the larger family was from.
Seems all the suburban guy’s knew to stay away from the local girls, because there was history of suburban guy’s being railroaded into marriage with the small town girls (who really wanted out of small town life) on the false accusation of getting the girls pregnant.