Christmas 2016, the presents are over, but for Margitta Nissen the most exciting moment is yet to come. “I have a surprise,” she says to her partner, holding out a small black box with a ring in it and asking, “Will you marry me again?” Guido Nissen is overwhelmed and shaking. Because he’s not just her partner. He is also her ex-husband. He doesn’t have to think about it: “Yes,” he says immediately.