Sea otters hold hands while sleeping so they don’t drift away from each other.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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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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Historically, sweat has been an active ingredient in perfume and love potions.
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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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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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You burn 26 calories in a one minute kiss.
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