Second what D says. Also - don't fall down the rabbit hole of thinking if only I had done this or that, he wouldn't be divorcing me. Most of the time we have little or no control over their actions - they are rewriting history and gnawing their leg off to get out of the "trap" (to escape their depression and/or other problems) and the temporary high he gets from his new infatuation will not be a permanent fix to his problems.
The income cap for an ACA subsidy is just over $49,000. I don't know what the divorce laws are like re: health insurance (and I think he might not be able to keep you on his employer-supplied insurance once you're officially divorced) but he does have to keep you on his insurance until then and that should be part of the order for temporary support from your lawyer.
I don't remember what your situation is re: debts and property.
As I remember, weren't you renting and not a lot of assets? What's the debt situation? What's the feasibility of getting a job that comes with health insurance? Are you a full ten years married yet? (You want to make sure it's the full ten because that qualifies you to get social security based on his spousal benefits if they are higher than your own).
