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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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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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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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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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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40% of people who are rejected in romantic love slip into clinical depression.
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