When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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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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Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
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In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
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A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
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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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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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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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