What Led to Megan Fox and Brian Austin Green's Original Split?

When Megan Fox and Brian Austin Green filed for divorce in August, the two were at odds over how to balance family life with work, sources say.

"They had several conflicts that led to the divorce," a family source tells PEOPLE in this week's issue. "Megan worked a lot last year, and she continues to work a lot. When she is away, Brian stays with the kids. Before they filed for divorce, they had disagreements about this situation."

As the actress, 29, continued to pursue her career, Green, 42, began to feel frustrated at home, the source says, adding that Fox's shifting goals were a factor in the couple's separation.

"Megan is a great mom, but also wants to keep her great career," says the source. "Brian ended up being a stay-at-home dad. He is happy to be with the kids, but also wants another life than just being a dad."



But with a third baby on the way, the former couple are simply trying to focus on what's best for their two children, Noah, 3½, and Bodhi, 2.

"There is clearly a lot of love," adds the source. "And they are great parents."

While Fox and Green are moving forward with their plans to divorce, at least for now, a source previously told PEOPLE they are living together again.

"Maybe a third baby will bring them closer," says the family source. "It seems they both think it's worth trying a bit harder to keep their family together as it is."