When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
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40% of people who are rejected in romantic love slip into clinical depression.
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Two in five people in the world marry their first love.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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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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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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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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