Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Wearing red increases attraction.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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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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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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40% of people who are rejected in romantic love slip into clinical depression.
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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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Parents receive 1 out of every 5 Valentines.
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