Nancy Kalish, Ph.D. received her B.A. from Douglass College of Rutgers University, and her doctorate from The Graduate Center, City University of New York. She has taught psychology at Monmouth University (N.J.), Loyola University of Chicago, and is currently a Professor of Psychology at California State University.

Dr. Kalish has appeared as a guest expert on numerous radio and television programs to discuss first love, puppy love, lost love, rekindled romances, and why many adults are still attracted to their ex-girlfriends or ex-boyfriends. National television appearances have included NBC News, The Oprah Winfrey Show, Maury Povich, Montel, ABC News 20/20, and CNN, as well as radio shows on CBC (Canada), BBC (United Kingdom), The Osgood File and National Public Radio's The Morning Edition and All Things Considered, among others. Her rekindled romance research has generated articles in newspapers from small, hometown publications to USA Today and The New York Times, and as far away as Japan (Kyodo News Service), Taiwan, India, Israel, England, Australia, and China. Recent magazines that have featured her research on lost love include Psychology Today, Men's Health, Self, MORE, Redbook, AARP, Chatelaine (Canada), German Cosmo, and Donna Moderno (Italy).

In addition to her romance research, Dr. Kalish has published theater and movie reviews in newspapers in New Jersey and California, and has had numerous professional articles published in linguistics and psychology journals. Dr. Kalish is a longstanding member of the American Psychological Association and the Authors Guild.