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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Men who kiss their wives in the morning live five years longer than those who don't.
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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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Men fall in love faster than women do.
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According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
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Two in five people in the world marry their first love.
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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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