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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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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When dragonflies mate, their tails form a love heart.
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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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