In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
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Two in five people in the world marry their first love.
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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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