@Never_falter - I looked at couples counseling as a way for us to be honest, with a "referee" if you will. I was looking for it to be a way to learn to communicate with each other, how to effectively compromise, and how to get through what I thought was just a "rough patch," and end up stronger in the end.
He never really told us (me or our counselor) what his goals were - which was probably part of the problem. I don't think he knew, beyond "getting" me to see how bad it was. I know he expected me to deal with all my issues, and "fix" myself (mentally and physically), and realize I should have listened to him sooner - I know this because he said as much during one of our sessions.
Basically, the fact that he has complex PTSD from childhood trauma came out in counseling. For him, it changed from I needed to fix me, to we both need to work on ourselves, and he didn't want to have to work on his own issues (again, I know this because he said as much - when push came to shove, he's not ready, and he doesn't want to do anything to heal. He's convinced it's not possible, and he wasn't willing to try to save our relationship. Which, really, would be the wrong reason anyway).
So, in my attempts at being honest in an environment that was supposed to be "safe," for both of us, he just kept getting triggered more and more. Since he is not being treated for PTSD, and has very few tools beyond what he's learned on his own by just surviving, he had no way of coping with all the crap coming out. It just didn't go well.
I started my own counseling after the death of my father to deal with everything, and learned quite a bit (and am still learning) about myself. We BOTH needed to be doing our own therapy in addition to couples counseling.