Our fights invariably devolve into him saying horrible things about my son. He apologizes later and says it won't happen ...

Dear Abby is written by Abigail Van Buren, also known as Jeanne Phillips, and was founded by her mother, Pauline Phillips.

My sister is in the middle of a contentious divorce. We have watched them treat each other badly over the years.

What drives me nuts is when we get in a fight, he never fails to bring up my son, call him filthy names and tell me he is ...

DEAR WOUNDED: So Don has a mean streak and doesn’t fight fair. The next time he drags your son into one of your disagreements ...