Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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The average person will go on a date at least 100 times before they finally marry.
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Two in five people in the world marry their first love.
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