I found this fascinating quote today:
Do your children refuse to see you since you and your ex separated? When you actually get to see your kid(s), do they lash out at you? Do they know things about your break-up or divorce that they shouldn’t know? Do they “diagnose” or berate you by using adult terms and expressions that are beyond their years?shrink4men.wordpress.com, A Shrink for Men, Mar 2009
You should read the whole article.