(hollyscoop.com) - Rumor has it that Avril Lavigne 's marriage to rocker Deryck Whibley is on the rocks. Apparently the couple has been growing apart since she started her world tour earlier this year. Avril had said that they kept in touch through phone and email, but obviously it wasn't enough. A source told the always reliable National Enquirer, "Deryck isn't motivated in his own career, so he's been drinking and partying." He was reportedly also spotted holding hands with a mystery woman at a nightclub in LA recently. When the cats away, the mice will play! They haven't been photographed together for months, so these rumors were bound to start sooner or later. What do you guys think?