So, after the mini (maxi?) breakdown, I found a local depression and bipolar support group. I did a search and there happened to be a meeting last night. I was a little hesitant about it being too extreme, but figured I'd try.
It turned out to be a large group (12 people?). The format was to just go around the room and for each person to have 5-10 minutes to talk, with some feedback from others in the room. It was a mix of ages, a mix of diagnoses (though mostly bipolar) and a mix of severity (my current 3 medications I think was the lowest number of meds people were on). There were a few family members/ partners. Everyone was very welcoming.
They meet weekly, and I'm not sure I'll go weekly. It's 2 hours! Though it is close by. It was nice to be able to vent a little, and sadly, to see that my situation could be a lot worse. Though, when I mentioned something about M and my feeling that he doesn't believe in mental illness (and I'm talking extreme here, I know) they all practically in one voice said, he wants you to 'get over it'. Yeah, a common thing people hear it seems... Not that he's said that...
Anyway, just thought I'd let you know.