Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
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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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
Couples' personalities converge over time to make partners more and more similar.
235
Two in five people in the world marry their first love.
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