Question: Whom did Mathias Schoenaerts portray in the 2012 French–Belgian romantic drama film directed by Jacques Audiard, starring him and Marion Cotillard?

Context articles: Furia (film)
Dheepan
Rust and Bone
The Story of a Boy Who Wanted to Be Kissed (film)
From the Land of the Moon (film)
Blood Ties (2013 film)
Chloé (1996 film)
Lisa (2001 film)
Matthias Schoenaerts
Ismael's Ghosts

Furia is a 1999 French romantic drama film directed by Alexandre Aja, who co-wrote screenplay with Grégory Levasseur, adapted from the science fiction short story "Graffiti" by Julio Cortázar.
 It stars Stanislas Merhar and Marion Cotillard.
Dheepan is a 2015 French crime drama film directed by Jacques Audiard and co-written by Audiard, Thomas Bidegain, and Noé Debré.
 The film was partly inspired by Montesquieu's "Persian Letters", as well as the 1971 film "Straw Dogs", with guidance from Antonythasan Jesuthasan, who stars as the title character.
Rust and Bone (French: De rouille et d'os ) is a 2012 French–Belgian romantic drama film directed by Jacques Audiard, starring Marion Cotillard and Matthias Schoenaerts, based on Craig Davidson's short story collection of the same name.
 It tells the story of an unemployed 25-year-old man who falls in love with a woman who trains killer whales.
The Story of a Boy Who Wanted to Be Kissed (French: L'Histoire du garçon qui voulait qu'on l'embrasse ) is a 1994 French romantic drama film directed by Philippe Harel starring Julien Collet and Marion Cotillard in her film debut.
From the Land of the Moon (French: Mal de pierres ) is a 2016 French film written and directed by Nicole Garcia and starring Marion Cotillard.
 The film is adapted from From the Land of the Moon, the novel of the same name by Milena Agus.
 The film competed for the Palme d'Or at the 2016 Cannes Film Festival and received 8 nominations for the César Awards, including Best Film, Best Director for Nicole Garcia, and Best Actress for Marion Cotillard.
Blood Ties is a 2013 Franco–American crime thriller film directed by Guillaume Canet.
 It is a remake of 2008 French thriller "Les liens du sang" by Jacques Maillot, an adaptation of the French novel "Deux frères: flic & truand" by Bruno and Michel Papet.
 The screenplay was written by Canet and James Gray and stars Clive Owen, Billy Crudup, Marion Cotillard, Mila Kunis and Matthias Schoenaerts.
 The film was selected to be screened out of competition at the 2013 Cannes Film Festival.
 It received a limited release on March 21, 2014 in the United States.
Chloé is a 1996 French-Belgian TV drama film directed by Dennis Berry starring Marion Cotillard in the title role, a 16-year-old girl who is forced by her boyfriend to become a prostitute.
 The film features Édith Piaf's song ""La Vie en Rose"" performed by Louis Armstrong.
 Years later, Marion Cotillard won an Oscar for playing Piaf in the 2007 film "La Vie en Rose".
Lisa is a 2001 French-Swiss romantic drama war film directed by Pierre Grimblat based on the novel "Théâtre dans la nuit" by Patrick Cauvin, starring Jeanne Moreau, Marion Cotillard, Benoît Magimel and Sagamore Stévenin.
Matthias Schoenaerts (] ; born 8 December 1977) is a Belgian Flemish actor, film producer and graffiti artist.
 He made his film debut at the age of 13 in "Daens" (1992), which was nominated for the Academy Award for Best Foreign Language Film.
 He is best known for his roles as Filip in "Loft" (2008), Jacky Vanmarsenille in the Oscar-nominated "Bullhead" (2011), Ali in the BAFTA and Golden Globe-nominee "Rust and Bone" (2012), for which he won the César Award for Most Promising Actor, Eric Deeds in "The Drop" (2014), Bruno von Falk in "Suite Française" (2015), Gabriel Oak in "Far from the Madding Crowd" (2015) and Hans Axgil in "The Danish Girl" (2015).
 Schoenaerts received critical acclaim for his portrayal of an ex-soldier suffering from PTSD in "Disorder" (2015).
Ismael's Ghosts (French: Les Fantômes d'Ismaël ) is a 2017 French drama film directed by Arnaud Desplechin, starring Mathieu Amalric, Marion Cotillard, Charlotte Gainsbourg and Louis Garrel.
 The film follows a filmmaker whose life is sent into a tailspin, just as he is about to start shooting a new film, by the return of his wife, who disappeared 20 years ago and whom he thought dead.
 "Ismael's Ghosts" premiered at the 2017 Cannes Film Festival as the opening film.