Saint Valentine’s Day, also known as Valentine’s Day or the Feast of Saint Valentine, is a holiday observed on February 14 each year. It is celebrated in many countries around the world, although it is not a holiday in most of them.
The day was first associated with romantic love in the circle of Geoffrey Chaucer in the High Middle Ages, when the tradition of courtly love flourished. In 18th-century England, it evolved into an occasion in which lovers expressed their love for each other by presenting flowers, offering confectionery, and sending greeting cards (known as “valentines“). (Wikipedia)