Avril Lavigne has confirmed on her MySpace page that she’s split from her husband, Sum41 frontman Deryck Whibley, 27, after three years of marriage. “Deryck and I are separating and moving forward on a positive note,” wrote Lavigne, 24. “Thank you to all my family, friends and fans for all your support. Deryck and I have been together for six-and-a-half years. We have been friends since I was 17, started dating when I was 19, and married when I was 21. I am grateful for our time together, and I am grateful and blessed for our remaining friendship.” The two began dating in 2004 and were married in 2006. “She married too young and she finally realized that,” a source told People. “Avril realized she needs her own life and needs to explore things without him.”