The romantic holiday has been celebrated for centuries, but the history behind it is much darker than red roses.

One of the most common explanations is that Valentine's Day has its origins in the ancient Roman fertility festival of Lupercalia. The debaucherous festival, which celebrated the coming of spring ...

and when did the custom of sending Valentine's Day cards begin? According to History.com, during the third century in Rome, Emperor Claudius II "decided that single men made better soldiers than ...

And while that is what Valentine's Day has evolved into, the romantic holiday hasn't always been so sweet. The exact history of Valentine's Day is a bit murky, but some historians believe the ...