Fleetwood Mac's Stevie Nicks has said that she hopes Katy Perry and John Mayer will be together forever as she thinks they're such a great couple.

The pair attended a Fleetwood Mac concert in Las Vegas last month and the singer dedicated their track Landslide to them.

Speaking to UsMagazine.com Nicks said, "They seem to be a really great couple, and they seem to really care about each other. I am just hoping for the best for them. It would be great if that relationship really worked out and they were together forever.

"I think they're really good for each other. They're very different people, and that's the best way to go out with somebody. I always love to dedicate Landslide to people I know really get it and appreciate it because it doesn't go out to anybody.''

Nicks went on to explain that while she's been friends with Mayer for a long time, she's only gotten to know Perry lately but is now a big fan.

She said, "I like Katy's songs and her energy. I dance to them and I treadmill to them. Anybody who makes my treadmill list is my friend because they are helping me to keep my weight exactly where I want it to be. I think Katy's really fun, funny and quirky. I met her in London months ago. We sat down at 11:30 at night. We sat in the coffee shop for three hours. We ran the gamut of her life, my life and everything. I just really like her.''