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Marion Cotillard\'s Partner Guillaume Canet Calls Brad Pitt Cheating Rumors \'Stupid and Unfounded\'

Marion Cotillard\'s partner Guillaume Canet is speaking out against rumors that Cotillard had an affair with her

costar Brad Pitt, or that she had any role in his divorce from Angelina Jolie.

"I don\'t usually make it a habit to comment on rumors made about us," the actor-director, 42, wrote in French on Instagram Friday, alongside a picture of a "Danger" road sign.

"I also don\'t usually talk about my private life which until now I\'ve always protected attentively ... But the fury of the tabloids, the venal stupidity of some people calling themselves journalists, the haters who feel braver behind a keyboard, drive me to speak of the pride, love, respect and admiration I have for Marion staying as strong and intelligent in the face all these stupid and unfounded accusations," he added.

"I think we\'re all living with much more important things at this moment and now it\'s time to move on and raise the bar a bit," Canet continued. "Even if there\'s so much work for some, I want to be positive. And as Marion said so well I hope you get better and aspire to something in your life than constantly sending s---!"

Je n\'ai pas non plus l\'habitude de commenter les rumeurs faites à notre sujet... Je n\'ai pas non plus l\'habitude de parler de ma vie privée, que jusqu\'à présent j\'ai toujours protégé avec beaucoup d\'attention... Mais l\'acharnement de la presse people, la bêtise vénale de certaines personnes se faisant appeler journalistes, la haine de certains internautes se sentant plus forts derrière un clavier, me poussent quand même à dire la fierté, l\'amour, le respect et l\'admiration que j\'ai pour Marion, de rester aussi forte et intelligente face à toutes ces accusations débiles et non fondées. Je pense que nous vivons tous des choses autrement plus importantes en ce moment et que maintenant il serait temps de passer à autre chose et d\'élever un peu le niveau. Même si il y a beaucoup de travail pour certains, j\'ai envie d\'être positif. Et comme dit si bien Marion je vous souhaite d\'aller mieux et d\'aspirer à autre chose dans votre vie que d\'envoyer constamment de la merde !

Jolie, 41, filed for divorce from Pitt, 52, Monday, citing irreconcilable differences. Sources previously confirmed to PEOPLE that the pair\'s breakup had nothing to do with Cotillard, who is pregnant with her second child with Canet.

Cotillard, 40, announced her pregnancy on Wednesday, and took the opportunity to denounce the rumors that she and Pitt had an inappropriate relationship on the set of their new film.

"This is going to be my first and only reaction to the whirlwind news that broke 24 hours ago and that I was swept up into. I am not used to commenting on things like this nor taking them seriously but as this situation is spiraling and affecting people I love, I have to speak up," Cotillard captioned on Instagram.

"Firstly, many years ago, I met the man of my life, father of our son and of the baby we are expecting," she announced, adding, "He is my love, my best friend, the only one that I need."

Cotillard explained, "Secondly to those who have indicated that I am devastated, I am very well thank you. This crafted conversation isn\'t distressing. And to all the media and the haters who are quick to pass judgment, I sincerely wish you a swift recovery. Finally, I do very much wish that Angelina and Brad, both whom I deeply respect, will find peace in this very tumultuous moment. With all my love, Marion."

Cotillard and Canet first starred together in 2003\'s

in 2013, and will next join her on-screen in the upcoming

The couple have a 5-year-old son, Marcel, who was born on May 19, 2011.

, Cotillard and Pitt play undercover allies in Casablanca who begin to develop a romantic relationship as they plan a high-profile assassination – with Cotillard as a French Resistance fighter and Pitt as her British intelligence officer husband.

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