Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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Wearing red increases attraction.
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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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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
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The single biggest predictor of love is proximity.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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