part 5: It’s when that process pays off-when you finally feel you’ve found the right person-that the true-love thrill hits, and studies of the brain and function magnetic-resonance imagers (MRI’S) show why it feels so good. The earliest MRI’s of brains in love were taken in 2000, and they revealed that the sensation of romance is processed in there areas. The first is the ventral tegmental, a clump of tissue in the brain’s lower regions, which is the body’s central refinery for dopamine. Dopamine does many jobs, but the thing we notice most is that it regulated reward. When you win a hand of poker, a ...