Men who kiss their wives in the morning live five years longer than those who don't.
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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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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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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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One in five long-term love relationships began with one or both partners being involved with others.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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Historically, sweat has been an active ingredient in perfume and love potions.
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