Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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40% of people who are rejected in romantic love slip into clinical depression.
72
One in five long-term love relationships began with one or both partners being involved with others.
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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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Historically, sweat has been an active ingredient in perfume and love potions.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
737