Q. My husband talks too much to his ex. Every time there is the slightest issue with the kids, they are on the phone chatting it up. It drives me crazy. Exes simply shouldn’t talk this much. All my friends agree with me and say it’s unnatural. He said I should write you and tell you my concerns, so I am. You can’t possibly condone all this ex conversation. What’s good ex-etiquette? A. I can’t tell from your email if your husband really does interact too much with his ex. I can tell you, however, that good co-parenting does require a lot of interaction, and if this isn’t addressed right from th…