Although the early beginnings of Valentine's Day are based in pagan rituals, the holiday is named for St. Valentine -- who could actually have been any one of three saints of that name dating from around the third century. The holiday's romantic associations started in 14th century Europe, where it was widely believed that birds started choosing their mates on Feb.14 [source: Religion Facts].
Nowadays, Valentine's Day is considered more a social holiday, rather than a religious one. It was removed from the Catholic Church calendar in 1969. Still, your young children probably think Valentine's Day is the perfect time to exchange cards with school friends [source: ChurchYear.net].