Kate Neilson has accused her ex-fiancé Wayne Carey of lying in his new book.

The Aussie Rules footballer, who recently published his tell-all autobiography The Truth Hurts, has opened up about his tough upbringing with an abusive father, his relationship with Neilson and his sports career.

Neilson apparently wrote on her Facebook page: "Kate Neilson has never heard so much crap in her whole entire life... wake up!!!!"

Neilson, who has hit headlines in the past for drug and alcohol issues, later claimed in another post to "hate people that lie all the time".

She and Carey broke up earlier this year when he changed the locks to keep her out of his Gold Coast mansion.