When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Historically, sweat has been an active ingredient in perfume and love potions.
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Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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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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'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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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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