The good news is that if you make a meal one of your first dates, then it's easy for you to weed out this jerk quickly. 

Unfortunately, some gals don't realize that they've fallen for a DUD until it's too late. While there are those who present their problems early on – with drug or alcohol issues – others disguise their drawbacks.

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Warning signs such as displaying narcissistic tendencies, claiming to be victimized by exes, or judging others are often ignored or overlooked.

"Others, especially players, hide it all and come on strong and perfect to win you over. Then once they have you, the trouble starts," Dr. Kirshner warns. 

The fear of being alone may motivate a woman to try and transform her "jerk." Dr. Kirshner is adamant that a true jerk can't be changed, at least not without an inclination toward personal growth. If he is open to therapy, like a 12-step program (in the case of addicts), there is hope. But if not, buyer beware.