So Valentines' Day is coming up. Let's see what I can dig up about it.
"An alternative theory from Belarus states that the holiday originates from the story of Saint Valentine, who upon rejection by his mistress was so heartbroken that he took a knife to his chest and sent her his still-beating heart as a token of his undying love for her. Hence, heart-shaped cards are now sent as a tribute to his overwhelming passion and suffering."
That'll make you think twice about heart shaped cards.
Internet is being a pain.