This is a great article: http://www.focusonthefamily.com/lifechallenges/relationship_challenges/b...

And from the same author...http://www.smartstepfamilies.com/view/dating-red-flags
Ron L. Deal

"If you repeatedly witness the following from a dating partner with children, consider them significant red flags that should not be dismissed.

Always on the Defense. If they are closed to your observations about their children and easily defensive about their kids or their parenting, you will find yourself powerless in your own home.
Ignoring the Parental Unity Rules. If they refused to share parenting power with a previous spouse or won’t let you participate (especially when planning to marry), beware, beware, beware!
Cowering to an Ex-Spouse. Someone who constantly seeks peace with an ex-spouse at all costs will not stand up for you when the time comes."