Ellen Fein is an author best known for co-writing The Rules: Time-Tested Secrets for Capturing the Heart of Mr. Right, a best-selling 1995 book. The book was co-authored by Sherrie Schneider. Fein went from near anonymity to instant celebrity after the book sold 2 million copies.
When Fein filed for divorce in 2000, her credibility as an expert on relationships was questioned. Fein remarried on July 27, 2008.
On January 8, 2013 Ellen Fein release Not Your Mother's Rules. The fifth book she has had published.