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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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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A man's beard grows fastest when he anticipates sex.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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Couples' personalities converge over time to make partners more and more similar.
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