Did you know that this day gets its name from a famous saint who was a priest in Rome in the third century (that's a very, very, very, very long time ago!)
The Romans also had a festival called Lupercalia in the middle of February, officially the start of their springtime. The Church wanted to turn this into a Christian celebration, and decided to use it to remember St Valentine too.
Valentine's Day, or St Valentine's Day, is celebrated worldwide every year on the 14th of February. It's the day when people show their affection by sending cards, flowers, chocolates or even teddy bears to each other.
