Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
40% of people who are rejected in romantic love slip into clinical depression.
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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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The average person will go on a date at least 100 times before they finally marry.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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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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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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