Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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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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Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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The average person will go on a date at least 100 times before they finally marry.
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Parents receive 1 out of every 5 Valentines.
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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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Historically, sweat has been an active ingredient in perfume and love potions.
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