When Kyle and I pulled up outside Liam and Ashley’s place, McKenzi had already been there for hours. We had selected the unspoken day that she normally visited her other family’s place for the day of our outing and agreed that she should go over first. It seemed to me a tacit understanding of the differences in our relationship—there was Kyle and I and there was us and Mack. That Kyle had drifted closer to me in the equat...