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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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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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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Women rate men more attractive if other women are looking and smiling at him.
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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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Raj from the Big Bang Theory is married to Miss India.
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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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