If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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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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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
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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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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Couples' personalities converge over time to make partners more and more similar.
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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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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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