I sat cross-legged on my bed, flipping through the last pages of my notes as the reading week finally drew to a close. Zack sprawled on the floor nearby, his textbook open in front of him but completely ignored while he scrolled through his phone. We had been studying together for hours—mostly me buried in my work while he grumbled about how dry the material was. He was just my course mate, the guy who sat two rows behind me in lectures, always whispering those quiet jokes that made me smile ...