As suddenly as it happened, it’s over. Art dealer Kipton Cronkite‘s shock November marriage to Park Avenue real estate broker Larry Kaiser is ending in divorce after just five months. KiptonART founder Cronkite, 40 next month, and Kaiser, 70, never lived together. A friend said, “They made a spontaneous decision to get married, but they are not lovers or boyfriends. They remain friends, but they are separated.” The wedding in Greenwich shocked society pals because of the age gap and because nobody knew they were an item. The pair confirmed they’re divorcing, but had no further comment.