You remember the three date rule right? Basically you have to go on three dates with a person before its time for sex.
Naturally, people’s opinions on this vary from first date to “wait until marriage.
But for those who have no particular philosophical bent, it was a good rule. It means the guy doesn’t have to wait forever, but the girl waits long enough to maintain her respectability, according to the standards of the day.
The experts in the article are a bit more wishy washy. You might want to peruse the article, but the three date rule is still viable.