Okay, that's good, because I don't remember all of the steps from taking a martyr's saint day to make it a holiday for love. Near as I can remember, it's Chaucer's fault for starting it all.

In the modern era, it's a holiday for expressing affection for others, like giving them cards, sweets or flowers. Different cultures in my world that recognize the holiday have different ways to celebrate it, but the affection is the constant.

Card-making sounds like a really good art project.