As a solo artist and with the Mac, Nicks has sold close to 100 million records. Although her relationship with Buckingham is obviously a lot better than when he stormed out of the band in 1987 - after calling her "a schizophrenic bitch" and throwing her over the bonnet of the car - time has not healed all the wounds. Shortly before I met Nicks, Buckingham seemed close to tears when he told me that she had never thanked him for all the work he'd done on the album.
"Did he say that to you?" replies Nicks incredulously. "My God. All I can say is he worked his butt off. I give him all the credit. He took my little skeleton songs and turned them into fully finished pieces. The way we work hasn't changed and he is an immense talent, a craftsman beyond belief. I knew that the first time we met."
That was back in their San Francisco high school in the late '60s. The pair played in the same band for three years before falling in love and forming the duo Buckingham Nicks. Their fateful meeting with Mac founder member Mick Fleetwood inaugurated one of the most infamous - and lucrative - soap operas in rock history.
"We did have a great relationship at first," says Stevie. "I loved taking care of him and our house. I washed his jeans, embroidered stupid moons and stars on the bottom of them, and made it so he was perfect.
"But the day we joined Fleetwood Mac that all changed because we were famous and we were rich. The world really got in the way. I left him and he was torn up, but he wouldn't have been nearly so torn up if we hadn't been in a band together."
Nicks has many plans for future solo career projects but she's now relishing the thought of raking over the ruins of her failed relationship with Buckingham. All in name of rock 'n' roll of course.
"Going onstage is my favourite part," she says. "When we play something like Go Your Own Way, of course it takes me right back to when we broke up. That never goes away.
"We know it stops when we come offstage. It's a lot of fun - we get to yell at each other and argue out a lot of things we never got to argue out in private. It certainly makes it exciting for the audience."