Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Men fall in love faster than women do.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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A man's beard grows fastest when he anticipates sex.
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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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