Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
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Two in five people in the world marry their first love.
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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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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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