@Germlat,
I might be mistaken. I hope you don't think I'm a counselor. Perhaps you don't and referring to them. True, that some counselors aren't wise and don't give you timely or good advice.
Other counselors are good and give you advice you may not want to hear. all of which can add to distress level. My advice, free as it is, you need to find yourself a good counselor for yourself and help sort these major issues out.
If you don't have a good one, perhaps you can get some good help from ma church or religious minister. If not that, there are a few good resources if you state what major city you live near. One of here might make that process a tad bit easier so you can get someone to help you soon.
Middle-aged people in high stress situations, as you know, often go through all kinds of personal changed. Add to that the added stress of job loss, weight gain and other major stressors, you have the stuff of relationship challenging major distress. At some look up (through web search like Google) what are the major psychological stressors (like 6 or 8 of them). you'll see quite a few of the ones you list in your mutual scenarios.
However, all this being said, you have a bit more involved history as shown by the previous post:
http://able2know.org/topic/223389-1#post-5510603