Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Two in five people in the world marry their first love.
270
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
A man's beard grows fastest when he anticipates sex.
239
40% of people who are rejected in romantic love slip into clinical depression.
72
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234