From my memories of high school, the parents who were strictest with their girls were mothers who had been "wild girls" in their day.
They KNEW what was out there.
There was a girl who was quite a bit younger than me. She was in junior high when I was an upperclassman in high school. She, I guess you would say "admired" me. I don't know if you would really call it a crush, but something like that. (This was not a common experience for me. Girls generally paid very little attention to me, lol.) She and I would sit together at football games and band contests (we were both in band) and talk. That was it, really. There had never been contact outside of that other than just to say "hi" when we saw each other around town.
When I was in college and she was in high school, this continued. I'd be home for the weekend and go to the game, or I'd show up at band contests, and we would sit together and talk.
One time we decided we should continue our conversation the following evening. I would pick her up at her house.
I was in college and associated mostly with people who did not live with their parents.
When I arrived, she was still getting ready and I got to sit down and talk with her dad, the Deputy Sheriff. (He's now the Sheriff, and has been for many years.)
I'm thinking,"WHOA! How did I get into this?"
I was not thinking and was completely blindsided.
From him I'm getting, "You know this is my baby girl," and "where are you going? what are you going to do? how late do you expect to be out?" etc. We really were just friends, and were just going to get a coke and ride around and shoot the breeze. But dad saw it as his little girl being picked up for a "date" by someone older than her who had been known to be a little on the wild side.
Anyway, it was a little tense, but no one got shot.