If the '50s saw young people starting to experiment with sex, the '60s was the resulting explosion of sexual activity in the name of freedom.
For a long time, sex was either not discussed or seen as a kind of enemy — a destroyer of young girl's reputations.
This stands in stark contrast to today's dating world, when the topic of marriage may not be brought up for several years.
Some people look back fondly on dating, generations ago, with romantic ideas of greater morality and better values.
Others think that with all of the online apps and matchmaking websites we have today, it's never been easier to play the field.
In the earlier part of the 20th century, sex and sexuality were not openly discussed.
As author Jodi O'Brien put it, "Sex was desexualized" and reserved for marriage, when the couple had entered into a spiritual union with God.
As the years rolled on into the 1920s, however, this system quickly became outdated and unfavorable. Bailey writes in her book , "Dating had almost completely replaced the old system of calling by the mid-1920s — and, in so doing, had transformed American courtship." This was a period of time when couples started going out on dates, which also meant they started paying for dates.
This changed the relationship dynamic between a young man and a young woman, as now it was the man's duty to pay for the date, whereas before it was the woman who decided the terms of the visit.
According to the University of California, Santa Barbara, "Across university campuses, couples publicized their decision to 'go steady' when the man gave the woman an article of his clothing to wear, such as a jacket, sweater, or ring." Dating had become much more about youth culture than about family expectations.
The way in which two people experienced sexuality when dating also shifted.
Between the popularization of rock 'n' roll, and protesting the Vietnam War, 1960s youth culture was hot for revolution.
Not only was it the activities of the US government that young people were resisting, but they were shirking old social conventions as well.
As a result, the purpose of dating was primarily to have fun, not to find a marriage partner.