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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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Men fall in love faster than women do.
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When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
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