In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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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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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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Raj from the Big Bang Theory is married to Miss India.
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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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When dragonflies mate, their tails form a love heart.
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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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