When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
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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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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