Today’s tradition of trading love notes on February 14 became popular in England in the 17th century.
Some anthropologists believe that kissing originated with early Homo sapiens passing food to their babies mouth to mouth. As humans developed, the mouth-to-mouth feeding stopped, but the learned behavior of kissing remained.
When was the first box of chocolates introduced?
Find more Valentine's Day facts and Shortcuts to a Romantic Valentine’s Day at Real Simple.