40% of people who are rejected in romantic love slip into clinical depression.
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When dragonflies mate, their tails form a love heart.
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Couples' personalities converge over time to make partners more and more similar.
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Two in five people in the world marry their first love.
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In 2010, Gary Richmond was beaten into a coma. He woke up with amnesia and no memory of his wife of 20 years. Subsequently, he ended up falling in love with her all over again!
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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