Avril Lavigne Files For Divorce

Singer and Sum 41's Deryck Whibley separated last month.

[artist id="1228637"]Avril Lavigne[/artist] filed for divorce from [artist id="960668"]Sum 41's[/artist] Deryck Whibley last week, according to case summary obtained by MTV News. The pair had been married for three years.

The news does not come as a surprise, as Lavigne posted on her MySpace page September 17 that they had separated. According to TMZ, the documents state that Lavigne cited "irreconcilable differences" and that the couple separated September 4. The documents also reportedly state that Lavigne is not asking for spousal support.

In her post last month, Lavigne wrote: "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. I admire Deryck and have a great amount of respect for him. He is the most amazing person I know and I love him with all my heart. Deryck and I are separating and moving forward on a positive note."

Lavigne concluded the message by thanking her family, friends and fans for their support.

The message (which was titled "Moving forward on a positive note") confirmed speculation that had run rampant in recent months that the couple's marriage was on the rocks. Earlier on September 17, Us Weekly ran a story that cited a source as saying Lavigne had "dumped" Whibley and forced him to move out of their Bel Air, California, mansion, adding that "divorce papers will be filed any day now."

Lavigne and Whibley were married in July 2006 in a non-denominational ceremony held at a private estate in Montecito, California, and their partnership quickly extended into the field of music, as Whibley played on and produced parts of Lavigne's last album, 2007's The Best Damn Thing, and was reportedly working with her on the follow-up to that record.

[This story was originally published at 7:23 pm E.T. on 10.14.09]