Sea otters hold hands while sleeping so they don’t drift away from each other.
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Two in five people in the world marry their first love.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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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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Couples' personalities converge over time to make partners more and more similar.
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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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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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