I know what you are saying about the lack of arguments and bad feelings making things more difficult. I find myself in the same situation. We still get along very well as friends. There is not a person on this planet that I would rather spend time with. That is what makes it so hard. Part of me wishes that I could resent her like she says that she resents me so that the time apart would be easier. But it just does not happen. I love her too much.
http://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=1162413&page=2#Post1162413 M-28 W-28 Together 10 years Married 2 years No children Things started taking a turn in 01/07