Johnny Hallyday is still causing sparks between the women in his life.The late star, a notorious womaniser, is at the centre of a love-triangle spat over claims the actor Catherine Deneuve was his lifelong soulmate and a factor in his split with his first wife, the singer Sylvie Vartan.The revelation came as news to the French public, most of whom were unaware of a relationship between the two celebrities – and also, it appears, to Vartan, 75, who described the story as “crazy”.In his new book