( PEOPLE.com ) -- 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 -- could n'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 . '' See the full article at PEOPLE.com . © 2011 People and Time Inc. All rights reserved .
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 .