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
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
One in five long-term love relationships began with one or both partners being involved with others.
177
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
687
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14