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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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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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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