Q. My ex is accusing me of all sorts of terrible things on Facebook. The court doesn’t listen to his accusations, so he plays it out on the internet. I’m a cheater, a whore, I’ve taken his children, none of which is true. So many of our friends have blocked him, and he even blames me for that. What can I do? What’s good ex-etiquette?

A. Good ex-etiquette is “good behavior after divorce or separation.” There is nothing about that that can be said to be good behavior.

At this point, the first step is to block him, and when your friends give you an accounting of what he says, simply say that you don’t know what he is saying because he is blocked. Your friends will understand your position and make their own decisions on how to interact with him. If, as you say, many have blocked him, then you already know the outcome. And you always have the option of deleting your account.

There is one negative aspect of just not letting it get to you and walking away. You will have no record of what was said if you do have to return to court unless a friend keeps tabs, just in case. Angry parents often forget that EVERYTHING in print is admissible in court, from your texts to your Facebook posts. If you delete it but your ex has a copy, it’s still admissible.

Be aware: Words matter. If you are slandering your co-parent, it could affect your time with the children. I’ve seen judges severely admonish parents who have vented or insulted their co-parent online.

All court decisions about custody and time with a parent are based on the best interest of the child. Special consideration is often given to the parent who is most likely to facilitate a relationship with the other parent. So this is a heads-up to angry parents who feel the venting online is justified. Don’t do it. That’s good ex-etiquette.

Dr. Jann Blackstone is the author of “Ex-etiquette for Parents: Good Behavior After Divorce or Separation,” and the founder of Bonus Families, bonusfamilies.com. /Tribune News Service