The pair lived together for five years before joining the band in 1975 but their romance ended a few years later and Nicks has been bottling up her feelings about Buckingham ever since.
The Don't Stop hitmakers announced last year (12) they were reuniting for a tour, and Nicks poured her heart out to Buckingham in a mammoth phone call in a desperate bid to clear the air ahead of the comeback.
She tells U.K. Tv show Loose Women, "We are getting along probably better than we ever have... Because about a year and a half ago I had a talk with Lindsey. I had the 'everything I wanted to say to you for 35 years' talk. I started in 1968 and I worked up... I started with (recalling how) he cut my fingernail off once because he decided I should practice guitar more. That was not a good move on his part. And I went from there all the way up until now.
"I said, you know, 'Do you remember how funny and sweet we were? Do you remember how cute we were? Do you remember how when we walked in the room we were a power couple... Do you know how long it's been since we have not been that power couple? If we are going to do this again, we've got to go back to the way we were.'
"He was very quiet. It was a solid hour and a half where I never stopped talking... It's much better now since the talk. Now we walk onstage and we are holding hands."