In Spare, his blockbuster memoir, Prince Harry recounts that during a 2015 interview shortly after his brother’s second child was born, a journalist told him that his gadabout single life had caused some to liken him to Bridget Jones. Harry was perplexed by the comparison, but in the context of Spare, it’s an apt one. At its best, the prince’s memoir reads like one of those popular late-1990s novels about British singletons blundering their way out of solipsistic immaturity into self-awareness and true love: If not quite Bridget Jones’s Diary, certainly High Fidelity or About a Boy. Advertisement To be...