From the world's foremost neuroscientist of romantic love comes the untold story of what happens in our brains when we are in love. From the world's foremost neuroscientist of romantic love comes a personal story of connection and heartbreak that brings new understanding to an old truth: better to have loved and lost than never to have loved at all. At thirty-seven, Dr. Stephanie Cacioppo was content to be single. She was fulfilled by her work on the neuroscience of romantic love; how finding and growing with a partner literally reshapes our brains. That was, until she met the foremost neuroscientist of loneliness. A whirlwind romance led to marriage, to sharing an office at the University of Chicago. After seven years of being inseparable at work and home, she lost her beloved husband following a devastating battle with cancer.