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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The single biggest predictor of love is proximity.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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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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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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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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In 2010, Gary Richmond was beaten into a coma. He woke up with amnesia and no memory of his wife of 20 years. Subsequently, he ended up falling in love with her all over again!
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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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