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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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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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
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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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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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When dragonflies mate, their tails form a love heart.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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