Speed dating was invented by a Rabbi in 1999.
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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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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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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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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