Keep reminding yourself that you're finally in the 'real' DBing or R-work stage of this past year-and-a-half, M. If he does his share of the work, you both will be just fine. And my guess is that as long as you keep trying hard, he'll be pulled to keeping things healthy as well.
But you're right - you can't control him or OW2 or anyone, except yourself. Perhaps not snooping keeps one in a classy, respectable, Grace Kelly sort of place. Where no matter what happens, you'll be fine because of who and what you are.
I'm glad that you figured out a way to improve your health. And that the happy pills have you dancing pirouettes. J/K!