- A source says tensions between Ashton Kutcher and Demi Moore have been building for some time
- "It just got to a point where they had to end it," the source says
- "The fighting could get pretty intense," another source says
Demi Moore and Ashton Kutcher announced their split on Thursday, but tensions have been building for some time.
"Ashton is unhappy; [Demi]'s unhappy," a source tells PEOPLE. "It just got to a point where they had to end it."
Despite longtime problems, the exes did try to work on their relationship. Unfortunately, their issues -- which went beyond Kutcher's alleged infidelities -- couldn't be resolved.
"The fighting could get pretty intense," an additional source says of Kutcher, 33, and Moore, 49. "Whatever counseling they did was fine for a quick fix but could not get to the heart of the problem."