The student came out a few more times, and he flew very well, as he always had, but I haven't seen him in a long time now. He called and left what I knew to be a BS excuse as to why he wasn't going to make what turned out to be his last scheduled lesson.
Unfortunately I wasn't the one taking the call, or I would have tried to finesse the situation. I tried to make him feel as comfortable and welcome as possible during the lessons he did come back for. I do, however, feel torn about actively pursuing this person to get them to come back. I'm not sure if giving them a call would open a sore spot for them or if it would make them feel "wanted" or "missed".