In this MyDailyMoment.com exclusive, the renowned relationship expert gets down to the nitty gritty and identifies the persona non grata in your love life. 

Dr. Kirshner tells MyDailyMoment: "The DUD is a guy a guy who ultimately has too many limitations on who he is as a person and how he fits with you, such that he cannot fulfill your needs for a lasting, passionate love relationship. He may be cold or disinterested, argumentative, mean or controlling. He may lie, cheat and/or disappear altogether.{relatedarticles} 

Although avoiding these types might seem like a no-brainer, Dr. Kirshner says that far too many women are doomed to DUDs because they feel as if they can't do any better. "Women think that they either have to take crumbs or settle for nothing and no relationship," she says.