'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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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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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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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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40% of people who are rejected in romantic love slip into clinical depression.
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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
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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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In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
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