When dragonflies mate, their tails form a love heart.
22
For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
41
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
Couples' personalities converge over time to make partners more and more similar.
235
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
You burn 26 calories in a one minute kiss.
605
A man's beard grows fastest when he anticipates sex.
239
Historically, sweat has been an active ingredient in perfume and love potions.
309