For those who want to know:
Saint Valentine's Day, commonly shortened to Valentine's Day, is a holiday observed on February 14 honoring one or more early Christian martyrs named Saint Valentine. It is traditionally a day on which lovers express their love for each other by presenting flowers, offering confectionery, and sending greeting cards (known as "valentines"). The day first became associated with romantic love in the circle of Geoffrey Chaucer in the High Middle Ages, when the tradition of courtly love flourished. It was first established by Pope Gelasius I in 496 AD, and was later deleted from the General Roman Calendar of saints in 1969 by Pope Paul VI. Modern Valentine's Day symbols include the heart-shaped outline, doves, and the figure of the winged Cupid. Since the 19th century, handwritten valentines have given way to mass-produced greeting cards.
Thank you Wikipedia.
I like to give Valentine's treats to all my friends. It can be the simplest of things.