OK, so it may be a holiday named for a Christian saint, but it's still a fun day to show the people you love (and lust after) just how much you care about them. This entire month has long been associated with love and romance, going back to the days of early Rome. Back then, February was the month in which people celebrated Lupercalia
, a festival honoring the birth of Romulus and Remus, the twin founders of the city. Part of the fun included a "love lottery". Although contemporary historians have questioned the existence of such activities, it's still a fascinating legend.
After Christianity moved in, the Pope Gelasius did away with Lupercalia around 500 c.e., denouncing it as an immoral Pagan practice -- go figure. However, love and romance couldn't be stopped, and so the pope declared St. Valentine to be the patron saint of lovers. Learn more about the legend of St. Valentine, and how he became famous here: Valentine's Day.