Many of President François Hollande's aides and closest friends confessed their anger on Tuesday at the prospect of Trierweiler's book being made into a movie.
“The nightmare goes on,” one of his advisers told Le Parisien newspaper. “I nearly fell off my chair,” said another one.
Hollande would have learnt the "nightmare" news of the film via a press release on Monday, but the Elysée palace has yet to officially comment on it.
Trierweiler's memoir lays bare the turbulent, six-year relationship she had with Hollande, including 18 months by his side after he became president in 2012.
It portrays France's unpopular Socialist head of state as a callous egotist and claimed he tried to win her back "as if she was an election" after the scandal of his affair with French actress Julie Gayet broke in January last year.
The prospect of Trierweiler’s relationship and then messy break-up with Hollande being portrayed on the big screen is the final straw for many in the president's camp.
“The fact that she has written a book is alright because she needed to move on, but agreeing to a movie [is something else]!” said one angry aide.
While Hollande's aides are fretting about the movie, the president himself is pretty unperturbed about the whole affair, according to one his frequent visitors to the palace.
“He is a tower of strength,” said one of his frequent visitors.
Trierweiler, 49, who works for French magazine Paris Match, has already earned more than 1.3 million euros ($1.5 million) in France alone from her book, according to her publisher. It remains in the top three books being sold in France.
Film director Saida Jawad, who has vowed the film would not be controversial, said Trierweiler would have final say over the film.
Could she also have the final world on the casting of her own character?
Speculation is already under way and several names have been suggested: Carole Bouquet, Sophie Marceau… and what about Julie Gayet?
Some seem to have made some guesses already.
“It would be a scoop if she asks Julie Gayet to play herself!” mocked a friend of the president, according to the Le Parisien.