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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Parents receive 1 out of every 5 Valentines.
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Men fall in love faster than women do.
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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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Raj from the Big Bang Theory is married to Miss India.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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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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