Despite having separated, the couple remained living together in their Los Angeles home and even took holidays to the Caribbean together.
In August, Jen opened up about the pair's relationship and how they had managed to stay "great friends".
"We are definitely a modern family. We're doing really well, thank you," she said, going on to explain why the family all went together on a trip to Europe. "Ben was working in London on Justice League, and I felt like the kids should really have that experience. He and I are great friends, and we just all went en masse."
The famous couple split in June 2015, and have three children, Violet and Seraphina, and son Samuel.
“Ben is making a big effort to take care of himself. They are not back together, but there seems to be hope. Jen is hoping they can stay married. Ben doesn’t want a divorce either," the source added.