Europe diary: JJ Martin + her Kali cave in Milan

I spent a few days with JJ, a designer based in Milan, a favourite of celebrities and magazine editors around the world. We gravitated toward each other at that Passalacqua thing…and went deep; within hours I felt I knew another wild, mad, yearning, loving person on the planet. We lead very different lives, but she consciously invited me into hers and d…