If you plan on getting someone a gift for Valentine’s Day, chances are that a card is part of the package. Whether the card is the only thing you get your Valentine, or if it accompanies jewelry, roses, or chocolates, you probably will spend some time thinking about the card’s message.
But what do these cards really say? And more importantly, are they saying things that are scientifically factual? To answer these questions, I went out to the local supermarket to see what I could find.