Michael had been living with Ben, and then Ben and Christine together, for years by now, in an arrangement that had morphed from a stopgap measure in the wake of his breakup with Caleigh into the most constant aspect of his adult life, all, needless to say, without any planning or discussion. Jobs, doctors, romantic crises had come and gone, but throughout he’d remained in that little front bedroom facing Shawmut Avenue on the edge of the South End.