You can amiCably coparent because you coparent for your kids benefit . Amicably coparenting is for the kids, not for you, not for her, not for the Marriage, not for your relationship with your ex.
I have made it this far amicably coparenting because I have placed the focus on what my best outcome for my child is, not on my personal feelings towards the end of our marriage and the betrayal. And I have to deal with the ex and his affair partner.
You have to make it not about you, and just the kids
