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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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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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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'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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Parents receive 1 out of every 5 Valentines.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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