I recall, quite a few years ago now, during a period where I was seeing a Nurse Practitioner, I once happened to see her at a local grocery store. My first instinct was to go up & say hello. But then I thought... she's no doubt on her way home after a long day at work. The last thing she needs is to be "buttonholed" in the grocery store by one of her patients. I've always been glad I walked away...