Fanning and James will play newly married couple Olivia and Luke, and Gere the hedonistic philanthropist who ingratiates himself into their lives, desperately seeking to create the life he once had.
The script is by Andrew Renzi, who will also direct, and was developed at this year's Sundance Screenwriters Lab. Treehouse Pictures will produce.
Filming begins October 21 in Philadelphia.
Celebrity Breakups and divorces of 2014 [PHOTOS]