It’s been decades since Fleetwood Mac‘s Stevie Nicks and Lindsey Buckingham broke up, but their turbulent romance remains one of rock history’s most legendary and complicated relationships. Both parties channelled their heartache into some of the band’s biggest hits, using their music to take barbed digs at one another. Indeed the group’s only US number one Dreams, was just one of the songs penned by Stevie in the aftermath of their split. They haven’t been a couple since 1976 but the…