Many people believe that Valentine’s Day is a made up holiday started by the greeting card industry to make money. This is not so. The reality of the day of romance is far more complex.
The day began based on religion. It was to celebrate the many saints who had been martyred who were named Valentine. Not so much of a romantic feeling. While this is typically well-known information, there are many stories as to how the romantic aspect came about. Most of these (the ones involving St. Valentine) are myths. However, Geoffrey Chaucer wrote The Parlement of Foules and alluded to birds meeting to mate on the day of St. Valentine. And thus began a tradition of romance on Valentine’s Day.
If you’re interested in the medieval work that began this holiday, you can read it here.