Well i think he was out of line to get that upset and to try to make u upset. I do understand that he would be upset with you for telling him that you think about leaving him and the kids. Its a scary thought, to loose his best friend and the thought of how the kids would take it. I understand why but he really needed to hear you out. You really need to talk to him about what you guys where talking about, when hes calm. Wish you the best of luck!!!