Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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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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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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In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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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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