Dear Amanda,
So sorry you are here, but you are among people who understand. It's particularly crushing for you because you have your own personal difficulties to contend with, with the myeloma. Something that I have noticed, very, very often is that one of the potential tipping points into MLC occurs when the non-crisis spouse is in need and thus needs the support of the MLC. I wrote this on GinasPrayer:
Things usually tip into crisis under the weight of difficulties, during which time the crisis person's self-esteem or self worth hits a very low point. It's likely then they are looking to their spouse to notice their distress / depression, to lift them up somehow. But we poor souls, we haven't really understood the depths of what is going on, usually because the MLC did not communicate that anything was wrong. And, from my observation, this situation often occurs when the non-crisis spouse's attention may be focused elsewhere for a while. Could be for something good - new job, a success, a new baby even. Or not so good, like an illness, issues with children or parents needing support etc. And because fear of rejection and abandonment is common with the FOO that lays the foundation for crisis the MLC maybe internalises or perceives neglect. The spectre of abandonment. None of this is your fault, or about you, or any of us in fact, but I do think there is some truth in the feeling of neglect and not being loved, or loved enough (I had both stated as a 'cause' at BD). People who fear (really pathologically fear) abandonment, often abandon first. It's a very destructive defense mechanism.
Many of us here are self-confessed 'fixers' and/or we may have consciously or otherwise shielded our MLC from too much emotional stress over the years. This is perhaps what you did when you asked a friend to support you during treatment. No blame to you whatsoever, but you did the coping for your H. I realised that I had always coped for my H. And then, when things piled up on him, at a time when I was experiencing some stress, not only could he not look to me for help in coping, he had the added pressure of me needing support. I don't write this as an excuse, but more toward an understanding. Many (most?) MLCrs have poor emotional coping skills. We perhaps didn't notice before because said 'skills' hadn't been tested too hard before.
I guess you intuitively know that you cannot currently rely on your H for anything. Big mantra here (and for me now also) is to have no expectations while he is in crisis. He won't act in the 'normal' way, and crucially, he will likely not be able to handle any pressure, plus run to avoid facing anything difficult. This is where he is at the moment, which is really hard to come to terms with, but it is useful to know, because you need to focus on your own health and well-being first and foremost. Your plans in this respect are better off without him in them.
It seems like he is still expecting you to be his support and ear, with no obvious recognition of the carnage he has created or the major life changing things you have to deal with. This adds another point to the pile - it's weird but true - the person in this kind of crisis seems to revert to a kind of Wo/Man sized teenager. That's another helpful thing to understand, I suppose.
Take care of yourself....