We told our children 3 weeks ago both D's 8 and 6. We sat them down on the couch and my W initiated the conversation. Even though this has been all of her idea I had to act as though it was a mutual decision. You just have re-assure them how much you love them, will always be there for them and do everything possible to keep their routines the same. The 6 yr old took it harder than the 8 year old however so far they seem to be doing ok. Unfortunately at this time you have to put your personal feelings aside for sake of your children.