Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Two in five people in the world marry their first love.
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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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Raj from the Big Bang Theory is married to Miss India.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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