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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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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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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In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
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Raj from the Big Bang Theory is married to Miss India.
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A man's beard grows fastest when he anticipates sex.
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When dragonflies mate, their tails form a love heart.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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