Two amendments were made following the conclusion of World War I that flipped the traditional rules of courtship on its head.

Flappers at the bar of Isa Lanchester's night club in London, circa 1925. General Photographic Agency/Getty Images

The dating scene in the 1920s has been romanticized as a glamorous affair defined by flapper girls, Gatsby-esque parties, and righteously liberated women — but liberation looked different in the 1920s than it does today.

Following the end of the first World War, two important amendments to the constitution were made: the 18th amendment, which prohibited the making, transporting, and selling of alcoholic beverages, and the 19th amendment, which granted American women the right to vote.

Speakeasies — illicit liquor stores and nightclubs — exploded onto the scene. The era of the male-only, pre-Prohibition saloons was over, and women started to patronize these bars, too. Courtship became a private event held in public (albeit forbidden) spaces; however, with the advent of the "liberated" women came the origin of "slut-shaming."