Nancy Dell'Olio has claimed she is taking legal action for "breach of confidentiality" over disclosures about her relationship with former England manager Sven-Goran Eriksson in his memoir.
The Italian said court agreements had previously been put in place which prevented them from disclosing details of their lives together and she said the contents of the book breached these.
In an interview with ITV's This Morning she said her legal team were now involved as a result of the publication of the book, Sven: My Story which came out last week.
And she said it was the publication of her own book which led to them splitting up because he was unhappy that she was planning to include him.
"He said 'no I will not accept it'," she told presenters Phillip Schofield and Holly Willoughby. "He was part of my life for 10 years, of course he has to be in a book."
Sven's book - which Nancy conceded she has not read - says of her: "She demanded constant attention, and I got more and more irritated with her."
Speaking on TV she admitted: 'Of course I am demanding and of course if the light is not right I say it, or the champagne is not cold enough, but is anybody surprised by this?"
She said: " I just started a legal action, against the publishers. The part of legal action is that Sven with his book is in breach of confidential agreements and we had an order signed in a court that we cannot talk about some details that he did. I am very surprised at the publisher they did not check this before."
She claimed some passages had been removed from online sources because "there were some lies there".
Nancy said she was surprised by the book's content, adding: " I know he's going through some financial troubles but I was expecting something with more style and more elegance."
She went on: "He was not forced to stay with me for almost 10 years. T here were beautiful moments, there were absolutely terrible moments. I was definitely in love with him, I do think he was in love with me, and I will stay positive."
Sven's publisher Headline did not wish to comment.