I told you about my surprise visit from my old neighbor Ann, the reaction of my current neighbors, Marge and Molly, and that we had quite a party the evening after Ann’s visit. Somebody said I ought to get on with that story, so here it is. First, I should tell you a little more about my neighbors and me. Molly and I have been together about four years, and Marge joined us three years ago. We’re all old enough to have keys to the K.M.A. club, and except for Marge, we don’t much care what others think, any more. Good thing, too, our lifestyle isn’t exactly conventional. Molly is…