A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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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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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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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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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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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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Speed dating was invented by a Rabbi in 1999.
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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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