LONDON — Mila Kunis, Casey Affleck and James Franco are set to join Liam Neeson and Olivia Wilde in the leads of Paul Haggis’ romantic drama “Third Person,” Haggis confirmed to Variety Wednesday.

The European production, funded, produced and sold by Belgian company Corsan, will start shooting Oct. 17 in Rome, where Haggis is in pre-production while cast negotiations are finalized. CAA is packaging and representing the North American rights.

The film follows three inter-connected love stories of three couples in three cities. “The stories look at the beginning, middle and end of a relationship,” said Haggis. “The couple in Italy represents the beginning, Paris the middle and New York the end.”

The Italian-set segment revolves around a young couple on a road trip, to be played by Affleck and Moran Atias, who appeared in the U.S. spin-off skein from Haggis’ “Crash” as well as his last feature, “The Next Three Days.”

The previously announced Neeson and Wilde, both of whom worked with Haggis on “The Next Three Days,” will play writers in the Paris-set section of the film.

Kunis, hot off the global success of Universal’s “Ted” ($350 million worldwide and counting), plays one half of an estranged couple in New York, with Franco playing her partner in the piece.

“These are complex characters in a challenging story,” Haggis said. “I’m thrilled we are attracting such an amazing cast.”

Haggis has also brought on board regular collaborators, production designer Laurence Bennett and editor Jo Francis. Cinematography will be handled by Sergio Castellitto’s regular collaborator Gianfilippo Corticelli.

Corsan CEO Paul Breuls will produce the film alongside Haggis and his producing-partner Michael Nozik.

” ‘Third Person’ exemplifies the kind of film we want to make,” Breuls said. “Corsan’s ambition has always been to develop creative partnerships with great filmmakers and give them the space and support to create artistic yet highly commercial films.”

Corsan World Sales will be selling international rights to the film in Toronto next month.