The author of How Could You Do This to Me?, Jane Greer, MD, is a nationally renowned marriage and family therapist who has been in private practice in New York City for more than 20 years. The author of advice columns for Redbook Online and Oxygen, she is frequently featured on "Montel," "Oprah," "Ricki Lake," "20/20," "Dateline," "Donny & Marie," and "The View," as well as in USA Today, the New York Times, the New York Post, Cosmopolitan, and Glamour. She lectures across the country on marital, sexual, and family problems and on women's and sibling issues.