Did Brody break up Avril and Deryck?

When punk rock pair Avril Lavigne and Sum 41's Deryck Whibley called it quits after only three years of marriage last October, fans weren't exactly shocked. Leading up to her separation, Avril was seen partying without Deryck more often than with him, and since the split, the singer hasn't slowed down her busy night life! She's been spotted with oil heir Brandon Davis, Wilmer Valderrama, most recently The Hills hottie Brody Jenner- and her ex Deryck! Just days after a night out with Brody, Deryck was Avril's date to an Alice in Wonderland after party. Since then, they've been spotted on some late night outings and look like they're on the path to a reunion.