How is Valentine's Day celebrated in North America?

Valentine's Day in NA

See the other questions in this Valentine's Day topic. Most of them were asked and answered by Americans and Canadians.

Many North Americans grow up exchanging paper valentines with their classmates. There is almost no romantic aspect of these valentines. They are just friendship cards. As we grow, the romance aspect increases. We give valentines to the people we have a crush on. Later, the people we love.

Adults in a romantic relationship often exchange gifts. These gifts most often take the form of flowers, candy, etc.

• Who made valentine day?
• Who came up the idea for Valentines day?
• Why is Valentines day although it occurs in the season of winter almost never regarded as a Winter Holiday on cards etc You seldom see snow on houses except maybe Russian sets?