Valentine's Day falls on February 14. It is the traditional day on which lovers express
their love for each other by sending Valentine's cards, often anonymously. The holiday is named after two men, both Christian martyrs named Valentine.
The day became associated with romantic love in the High Middle Ages, when the tradition of courtly love flourished. The day is now most closely associated with the mutual exchange of love notes
in the form of "valentines". Modern Valentine symbols include the heart-shaped outline and the figure of the winged Cupid. Approximately one billion valentines
are sent each year worldwide, making the day the second largest card-sending holiday of the year behind Christmas.