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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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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Speed dating was invented by a Rabbi in 1999.
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According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
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The average person will go on a date at least 100 times before they finally marry.
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Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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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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