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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In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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Two in five people in the world marry their first love.
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A man's beard grows fastest when he anticipates sex.
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Men fall in love faster than women do.
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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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