You can always say, "I understand that this is how you feel and although I don't agree with it, I am here to listen". It does something to you doesn't it? And what he is saying to you is crap-I have ALWAYS supported my husband and I valued every contribution he made. I never resented it. I considered us partners so don't let him put that on you. What I hear instead is that because i took such care of things, he could have been something if he had chosen another path and he resents me for the choices he should have taken but didn't.
So no-you could have stepped out and challenged yourself more but isn't that what you are doing right now by listening to him and pushing yourself to get out of this situation. He cannot honestly expect that he can dump you off the medical insurance (which you need-don't even think of agreeing to this) just to put his new OW on it. No-stick to your guns and make him cover you until December. You are not being co-dependent to expect some time to make arrangements to secure housing, a job, and medical insurance on his timing.
You can be confident in these discussions (like you have) but he can't throw you into the pool and hope to God you can swim. I am really worried about you. I am not thrilled that my H has walked away but there is no way I would leave him without medical insurance or no way to secure a job. He has been told this from the beginning-if he needs a place to stay, he can have the couch. You need to have some time to make your own arrangements and there is nothing wrong for asking for time to do so. Pace yourself-we are here for you.
Veterans, any feedback? I may be too new to give really amazing advice....