Valentine's celebrates romantic love, making it a popular day for couples to spend together. Valentine's Day is traditionally associated with red hearts, romance, flowers, candy or other sweet things, and the exchange of cards, called valentines, that express love.
The holiday has origins in the Roman festival of Lupercalia, held in mid-February. The festival, which celebrated the coming of spring, included fertility rites and the pairing off of women with men by lottery. At the end of the 5th century, Pope Gelasius the first replaced Lupercalia with St. Valentine's Day.