Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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When dragonflies mate, their tails form a love heart.
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Couples' personalities converge over time to make partners more and more similar.
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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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