When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
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Men fall in love faster than women do.
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Women rate men more attractive if other women are looking and smiling at him.
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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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40% of people who are rejected in romantic love slip into clinical depression.
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