Valentine's Day is celebrated annually on February 14th, where loved ones exchange gifts like candy, flowers, and cards. The modern tradition originated in France and England. Common symbols of Valentine's Day include Cupid, doves, hearts, and roses. In the Middle Ages, it was believed that the first unmarried person of the opposite sex encountered on Valentine's morning would become one's spouse. Today, Valentine's Day is widely celebrated as a day to express love and affection.