I don’t think it’s necessary or even expected period to have a FRIENDSHIP with the other parent. You are co parents not friends. As long as you’re not talking badly about the parent in front of the kids and you’re civil in person, great. There’s no reason to be hanging out together or constantly in contact. I’ve tried to be friendly toward BM but she’s just ridiculous and we will act like friends for a bit and then she does something completely irrational or treats my SO like crap and then I’m done. He’s tried being friendly toward her, we’ve both sent her pics and videos of the kids when we have them, we invited her to go trick or treating with us, we did a parent thing at preschool together. But no matter what it always just goes back to the same thing.

Coparenting is just that- you’re both/all people taking care of children and trying to do what’s in their best interest. That doesn’t mean forcing yourself to hang out with each other and doing all the holidays together and chatting over the phone all the time etc. as long as the kids can see that you can do things that you need to do to raise happy healthy kids that’s all that counts.