Avril Lavigne has revealed she has separated from Nickelback’s Chad Kroeger after two years of marriage.

The 30-year-old Complicated singer – who married the 40-year-old rocker in July 2013 – made the announcement on social media.

Avril wrote: “It is with heavy heart that Chad and I announce our separation today.

“Through not only the marriage, but the music as well, we’ve created many unforgettable moments.

“We are still, and forever will be, the best of friends, and will always care deeply for each other. To all our family, friends and fans, thank you sincerely for the support.”

The two Canadian singers met in July 2012 while working together on Avril’s single Here’s To Never Growing Up and Chad proposed just one month later.

They tied the knot on July 1 2013 in a low-key ceremony at Chateau de la Napoule in Mandelieu, near Cannes in the south of France.

Avril Lavigne performs at the Opening Ceremony of the 2015 Special Olympics World Games at Los Angeles Memorial Coliseum in July 2015
Avril recently gave her first performance since being diagnosed with Lyme disease (Rich Fury/Invision)

Over the last year Avril has been battling Lyme disease, a bacterial infection that if left untreated causes severe joint pain and extreme tiredness. In June she gave an emotional interview, explaining doctors had struggled to diagnose her condition, but she is now halfway through her treatment and on the mend.

Before dating Avril, Nickelback star Chad made no secret he enjoyed spending time with groupies and once famously described himself as a “walking penis” to Playboy magazine.

He told Men’s Health magazine in November 2012: “I don’t think my libido has changed. I just think that my Rolodex has been confiscated. And I’m OK with that.”

Avril Lavigne with ex-husband Deryck Whibley in 2008
Avril with ex-husband Deryck Whibley in 2008 (Jacob Kepler/AP)

Avril was previously married to Sum 41 frontman Deryck Whibley for three years. Their divorce was finalised in 2010.