When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
When dragonflies mate, their tails form a love heart.
22
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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