Speed dating was invented by a Rabbi in 1999.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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You burn 26 calories in a one minute kiss.
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Parents receive 1 out of every 5 Valentines.
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When dragonflies mate, their tails form a love heart.
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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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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Men who kiss their wives in the morning live five years longer than those who don't.
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