It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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One in five long-term love relationships began with one or both partners being involved with others.
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40% of people who are rejected in romantic love slip into clinical depression.
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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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Yawns are more contagious among people with closer relationships.
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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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