Anuptaphobia is the fear of staying single.
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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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Intelligent men tend to be more sexually faithful.
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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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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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Raj from the Big Bang Theory is married to Miss India.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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