The two stars, who split last month, were forced to reunite while reshooting scenes for the movie in South Africa.
Both Sean and Charlize have been spotted on the set over the past few days. Hopefully, things weren't too awkward for them!
Sean is directing Charlize in the movie, which focuses on a bigwig at an international aid agency, who meets a relief aid worker (Javier Bardem) during a political and social revolution in the country.
A few months ago, Charlize opened up to “Extra” about working with Sean, and how difficult it is to work with someone with whom you are romantically involved.