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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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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The average person will go on a date at least 100 times before they finally marry.
33
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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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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