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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Parents receive 1 out of every 5 Valentines.
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Historically, sweat has been an active ingredient in perfume and love potions.
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Couples' personalities converge over time to make partners more and more similar.
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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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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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