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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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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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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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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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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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
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When dragonflies mate, their tails form a love heart.
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