In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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Two in five people in the world marry their first love.
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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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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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The single biggest predictor of love is proximity.
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