"We found activity in three brain regions. We found activity in the brain region, in exactly the same brain region associated with intense romantic love. What a bad deal. You know, when you've been dumped, the one thing you love to do is just forget about this human being, and then go on with your life, but no, you just love them harder. The reward system for wanting, for motivation, for craving, for focus, becomes more active when you can't get what you want.
"We found activity in other brain regions also - in a brain region associated with calculating gains and losses. Last but not least, we found activity in a brain region associated with deep attachment to another individual. No wonder people suffer around the world, and we have so many crimes of passion. When you've been rejected in love, not only are you engulfed with feelings of romantic love, but you're feeling deep attachment to this individual. Moreover, this brain circuit for reward is working, and you're feeling intense energy, intense focus, intense motivation and the willingness to risk it all to win life's greatest prize."