Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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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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Speed dating was invented by a Rabbi in 1999.
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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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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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