In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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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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Two in five people in the world marry their first love.
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Historically, sweat has been an active ingredient in perfume and love potions.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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Kissing an infection-free partner is good for your teeth!
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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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