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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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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Men fall in love faster than women do.
32
The single biggest predictor of love is proximity.
30
A man's beard grows fastest when he anticipates sex.
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