DUP politicians Jeffrey Donaldson, Nigel Dodds and Emma Pengelly emerge from 10 Downing Street on Thursday after after holding talks with Theresa May. Photograph: Daniel Leal-Olivas/AFP/Getty Images

Dante and Beatrice. Quasimodo and Esmeralda. Cyrano and Roxane. Don Quixote and Esmeralda. These unrequited loves have great poignancy. But they’ve no(...)