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Avril Lavigne has said that she is still 'best friends' with her ex husband.
Avril split with Deryck Whibley in 2009 but are still close.
She told News Of The World: 'He's my best friend. We are still really close.'
The two worked on Avril's new album 'Goodbye Lullaby'.
She added: 'I was so lucky to have him be a part of this record. He is one of most talented people I've ever worked with.'