James Franco joins Kunis and Affleck in the romantic drama.
The film follows three inter-connected love stories of three couples in three cities. The budget is estimated at $28 million.
Although roles for Kunis, Affleck and Franco have not been confirmed, Neeson will play a writer and Wilde a New York gossip columnist.
“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.”
Haggis said: “I’m thrilled we are attracting such an amazing cast. Every director says that when their film is announced, but honestly – look at this cast.
“These are complex characters in a challenging story; I’m humbled that so many talented people have placed their faith in me. And I am grateful to have such terrific producing partners in Paul Breuls and Michael Nozik. Now I just need to survive five months of amazing pasta.”
Principal photography begins in Rome on 17 October.
