updated 09/18/2009 AT 2:15 PM ET
•originally published 09/19/2009 AT 2:15 PM ET
Avril Lavigne and Deryck Whibley seemed like the perfect rock couple. But at the age of 24, Lavigne began to see things differently, sources tell PEOPLE.
“She married too young and she finally realized that,” says a source. “Avril realized she needs her own life and needs to explore things without him.”