Answer:
The English author who helped to popularize Valentine's Day and make it the celebration we know today is Geoffrey Chaucer. Chaucer was a medieval poet and writer who lived in the 14th century and is best known for his famous work, "The Canterbury Tales."
In one of his lesser-known works, "The Parliament of Fowls," Chaucer wrote about birds gathering on Valentine's Day to choose their mates. This poem helped to establish the idea of Valentine's Day as a day for romantic love, and it became increasingly popular in England and other parts of Europe.
Over time, Valentine's Day evolved into a celebration of love and romance more broadly, and it became associated with the exchange of cards, flowers, and gifts. Today, it is celebrated in many countries around the world on February 14th as a day to express love and affection for one's romantic partner or loved ones.