In 2010, Gary Richmond was beaten into a coma. He woke up with amnesia and no memory of his wife of 20 years. Subsequently, he ended up falling in love with her all over again!
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Historically, sweat has been an active ingredient in perfume and love potions.
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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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40% of people who are rejected in romantic love slip into clinical depression.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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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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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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Couples' personalities converge over time to make partners more and more similar.
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