Here's a quick history lesson on Valentines Day.
The holiday's roots are in the ancient Roman festival of Lupercalia, a fertility celebration commemorated annually on February 15. Pope Gelasius I recast this pagan festival as a Christian feast day circa 496, declaring February 14 to be St. Valentine's Day. Which St. Valentine this early pope intended to honor remains a mystery: according to the Catholic Encyclopedia, there were at least three early Christian saints by that name. One was a priest in Rome, another a bishop in Terni, and of a third St. Valentine almost nothing is known except that he met his end in Africa. Rather astonishingly, all three Valentines were said to have been martyred on Feb. 14.
It was not until the 14th century that this Christian feast day became definitively associated with love. According to UCLA medieval scholar Henry Ansgar Kelly, author of Chaucer and the Cult of Saint Valentine, it was Chaucer who first linked St. Valentine's Day with romance.
In 1381, Chaucer composed a poem in honor of the engagement between England's Richard II and Anne of Bohemia. As was the poetic tradition, Chaucer associated the occasion with a feast day. In "The Parliament of Fowls," the royal engagement, the mating season of birds, and St. Valentine's Day are linked:
For this was on St. Valentine's Day, When every fowl cometh there to choose his mate.
Over the centuries, the holiday evolved, and by the 18th century, gift-giving and exchanging hand-made cards on Valentine's Day had become common in England. Hand-made valentine cards made of lace, ribbons, and featuring cupids and hearts eventually spread to the American colonies. The tradition of Valentine's cards did not become widespread in the United States, however, until the 1850s, when Esther A. Howland, a Mount Holyoke graduate and native of Worcester, Mass., began mass-producing them. Today, of course, the holiday has become a booming commercial success. According to the Greeting Card Association, 25% of all cards sent each year are valentines.
Personally I think Al Capone knew how to celebrate this holiday the best.