Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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You burn 26 calories in a one minute kiss.
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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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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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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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