Sorry to hear about your situation tango. Only advice I can offer is think about what you want. Are you working on "getting a life"? Since separation has been going on for a while you might want to consider "last resort technique" if you have not done so already.
Try something different.
Have you tried using a divorce busting coach, they can be helpful?
Good luck with your situation.
Me: 41 W: 41 Married: 17 years Together: 19 years 16-Sept-2008: "W: I want to move out." 16-Jan-2009: Separated, wife moved out. 31-Mar-2010: W, and kids move back home! D 14 S 12 D 11 S 7