No, you may not be a couple any more, but you’re still raising your kids together. Cooperation between homes is a must. But it’s tough after a broken relationship and that’s an important distinction. Talk about parental things not personal ones. Parental topics include Johnny’s health, school matters, and managing his social media time. Separate the old marital pain from the current parenting matters. Ask God to help you set aside your personal hurt so you can be the best possible parent.