In terms of MC, is that likely to be productive whilst your W remains involved with OM? Of course our sitchs are all different, but I don't think I could commit to MC unless OP was out of the picture.
Otherwise, aren't they just the white elephant in the room?
My response would be - if this other R is over, and you want to recommit to our M (or at least see if we can be together again), I'll invest my time and energy into MC....
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus