Water under the bridge for Avril Lavigne and her ex-husband Deryck Whibley. Lavigne, 39, joined Sum 41’s Whibley, 44, on stage at the MGM Grand Garden Arena to perform a duet of his band’s “In Too ...

Avril Lavigne and Deryck Whibley proved to be the definition of friendly exes when they took the stage together during her tour. It's clear things are not too complicated between Avril Lavigne and her ...

"When I signed autographs after the show people would flat-out say, 'Why are you with her? Her music is s---.'" In his new memoir Walking Disaster: My Life Through Heaven and Hell, the pop-punk ...

The 'Complicated' singer performed at the MGM Grand on Saturday, June 1 Denise Truscello/WireImage Avril Lavigne and her ex-husband Deryck Whibley may be divorced, but their relationship still has a ...

Add Yahoo as a preferred source to see more of our stories on Google. "When I signed autographs after the show people would flat-out say, 'Why are you with her? Her music is s---.'" In his new memoir ...

It's clear things are not too complicated between Avril Lavigne and her ex-husband, Sum 41 frontman Deryck Whibley. Instead, nearly 15 years after they called it quits, they seem to be quite friendly!