Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
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The single biggest predictor of love is proximity.
30
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Kissing an infection-free partner is good for your teeth!
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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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Two in five people in the world marry their first love.
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