Maria Bello has joined the cast of Paul Haggis’ ensemble romancer “Third Person,” which begins shooting Wednesday in Rome.Producer Paul Breuls announced the casting. Bruels is the head of Corsan, the film’s producer, financier and international sales agent. Haggis and producing partner Michael Nozik are also producing through their Hwy61 banner. Previously announced cast includes Adrien Brody. Liam Neeson, James Franco, Kim Basinger, Mila Kunis, Olivia Wilde and Moran Atias — who will portray the love interest of Brody’s character in the film. Haggis is directing from his own script, which follows three intersecting stories set in Paris, New York and Rome, with each storyline following a different stage of a love relationship from the beginning, middle and the end. Brody, Basinger and Corsan are repped by Paradigm. Neeson, Franco, Kunis, Haggis, Nozik and Hwy61 are represented by CAA.