A spectrum of intimacy. A long time ago, I realized the concept of a best friend was flawed. I had “best friends” in high school, people I resonated with deeply and was inseparable from. We gravitated to each other, did things together, and shared interests or were willing to learn each other’s. I lost that after high school, when those friends left to study abroad or changed schools. I had really good friends after, people I spent a lot of time with, but I’ve always found myself swimming upstream while everyone else drifted down. That outsider feeling, an interloper-ness, was...