Without knowing more, it is hard to comment but I and many here would advise you not to move out. Not out of the house. Not out of the MB. If someone has to go it should be the person that wants out. I am not saying throw her out. I am saying you stay.

Read the boundaries link. Understand the difference between boundary and ultimatum. Apply it. You do not want a R with her if there is another R.

R 25 years
M 14 years
S11 & S13
Working on it alone since Oct 2014
M in trouble a lot earlier (~2 years)
Feb 2016. 1st R chat in a yr.
Next R chat Aug'17
Still together