I wasn't married to her, but I lived with my ex-GF for 9 years, and we might as well have been married. Debt intertwined, no kids but several pets co-owned, and all that stuff. She has a condition called borderline personality disorder, and it got to the point where I couldn't take the mental abuse anymore, so I told her I was leaving, and that I'd continue to pay her way for awhile or longer, if she didn't do things to cause me trouble. Honestly it was mixed emotions for me to make that decision, because along with the issues which were so bad, there were good things about her (honesty, good to live with, good cook, etc). But none of that was worth feeling bad about myself all the time, and never quite making the grade with her. And sex had stopped happening too.
The "buyoff" method seems to have worked, although it was in 2006 that I left, and now it's 2013 and I'm still paying all her bills, and she still has my house, and I guess it's just always going to be that way. My wife is OK with it as long as the ex is respectful, but I know it's not politically correct for me to be allowing this to keep up.
Charles
She had borderline personality disorder but you say she was honest and good to live with...that doesn't make sense to me.