She is fifty-eight. The house is too big now and has been for three years, and her daughter has started saying things about the stairs, and a man she went to school with has just been widowed and has written to her. Second act is a plot-shape in which the romance arrives after a first life has already been lived and concluded. Divorce, widowhood, or a long stretch alone that had stopped being temporary. The characters are usually past fifty, and the shape is one of the few in the genre where the past is not an obstacle to be cleared but a completed thing both parties are carrying. What the shape promises is love without the pretence of a blank page. Neither of these people is available in the way a thirty-year-old is available. There are grown children with opinions. There are houses, pensions, wills, and a set of habits formed over decades that will not be dissolving. The reader gets a courtship conducted by two adults who know precisely what a marriage costs, because they have each already paid. The make-or-break element is whether the first life is honoured. That is the test and it sorts the shape immediately. A dead spouse who was loved, and is still loved, and does not need to be diminished for the new relationship to be legitimate, is the hardest and best version. Grief is not a competing claim. A widow can love two men consecutively without the first being retrospectively downgraded, and a book that understands this has access to a tenderness the rest of the genre cannot reach. The failure mode is the villainised ex. The former husband was cold, unfaithful, controlling, or all three, so that the reader can enjoy the new relationship without complication. That solves a problem the shape exists to explore. If the first marriage was bad, she is escaping. If it was good, she is choosing again, which is a far more interesting act. There is a second failure worth naming, which is the erased first life. Twenty-eight years are summarised in a paragraph and never mentioned again. The book wants the maturity the shape confers without the weight that produced it. The strongest versions use the adult children as the structural obstacle, because they are the shape's most natural one. A son who is not ready. A daughter who is being generous in a way that is worse than opposition. These are not villains, they are people with a legitimate stake, and negotiating them is a plot no younger couple could generate. There is also the practical register the shape is unusually good at. Two people combining lives at sixty are dealing with property, medication, whose kitchen, and what happens if one of them becomes ill. Books that put those conversations on the page find them more romantic than any declaration, because they are what love at that age is made of. He writes. She reads it twice, and then reads it a third time, and then puts the kettle on before answering. That is the shape. Not a late romance, but two people choosing again with full knowledge of the price.