I know we have different views on some of this stuff, but for what it's worth:
My pastor has told me, and I have read in 'boundaries' books, that
you can love someone unconditionally, and still decide that you cannot have a relationship (M) with them.
Not that I am encouraging that. I hope your M is restored down the road if/when you and your wife are both ready for that.
But you mentioned something a few pages back about thinking you loved her unconditionally and now you aren't sure...you can still love her but decide that the R is/was not good for you...