Reading about Sarah Vine’s recent memoir of political wifedom, I was struck not so much by the break-up with her husband Michael (now Lord) Gove, nor by being at the epicentre of the EU referendum, but by the savage way her friendship with Samantha Cameron ended. Once considered the best friend of the then Prime Minister’s wife, relations became strained after Gove backed Leave during the Brexit campaign. After Vine wrote in her Daily Mail column about her fears for its impact on the friendship, SamCam reportedly monstered her at a party for this perceived betrayal, then cut her out of their lives. Brutally, Vine was sacked as godmother to the Camerons’ daughter, Florence.