The Superpower Of Love by Sophie Hannah
When Campbell Golightly, an analytical philosopher specialising in vagueness, leaves the reliable Eve for tobacco heiress Rory Napper, there's nothing vague about the devastation he causes. As his world begins to disintegrate, Campbell watches in indecisive alarm. Is the unfolding chaos all his own doing, and can anything stop it? One person is determined to: Campbell's friend Simone Purdy, self-appointed Superpower of Love. A soap opera storyliner with a firm belief in her right to meddle for the common good, Sim wants the old world order restored, Campbell and Eve back together, and she's rallying the troops...