I betchya he's experiencing something similar to Honeypot right now. He's probably been trying and trying and trying for so long...that now, out of self preservation, he may have shut down in some areas. What he needs to understand is that there's a good chance those feelings etc are just submerged/stifled/hidden....but probably not gone for good.
He's been through alot and at some point (I've been there too) our feeling are affected...they shut down in order to not be hurt more. And unfortunatley, unless things are addressed (which you are trying to do) that can be the beginning of the end. Ask him for time, ask him to give MC a real chance, and remind him that you are willing to do whatever it takes to get your M back on track.
