Instagram intrigue isn’t just reserved for the kids.Fans of the legendary rock band Fleetwood Mac seemed to lose their minds earlier this month when they noticed that singer Stevie Nicks and guitarist Lindsey Buckingham had suddenly followed each other on social media.The surprise connection sparked a wave of speculation, especially given the duo’s famously stormy love story.But that was just the beginning.A little less than a week later, each icon posted lyrics from their 1972 rock ballad “Frozen Love” to their accounts.Fleetwood Mac singer Stevie Nicks' online reunion with bandmate and ex-boyfriend, Lindsey Buckingham, sent