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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One in five long-term love relationships began with one or both partners being involved with others.
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Raj from the Big Bang Theory is married to Miss India.
11
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Women who play video games tend to have more sex and be happier with their relationships than those who don’t.
18
Men fall in love faster than women do.
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