Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Couples' personalities converge over time to make partners more and more similar.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
When dragonflies mate, their tails form a love heart.
22
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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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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