One in five long-term love relationships began with one or both partners being involved with others.
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The single biggest predictor of love is proximity.
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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Historically, sweat has been an active ingredient in perfume and love potions.
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When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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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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Men who kiss their wives in the morning live five years longer than those who don't.
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