Parents receive 1 out of every 5 Valentines.
20
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
Wearing red increases attraction.
30
When dragonflies mate, their tails form a love heart.
22
In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
16