“Most relevant to our story, activity in several of these brain regions has been correlated with the craving of cocaine addicts and other drugs. In short, as our brain scanning data show, these discarded lovers are still madly in love with and deeply attached to their rejecting partner. They are in physical and mental pain. Like a mouse on a treadmill, they are obsessively ruminating on what they’ve lost. And they are craving reunion with their rejecting beloved—addiction.”

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