Hey Mish.. wow.. gosh dont know what to say. I thikn you did right to bite your tongue and not say antyhng snarky.. that would show him he is geting to you.
How about just treating it adult to adult (no agenda) and just ask how does he see this working and for how long and you wanted to know because of Marc.. also, with bills etc.. leave any broom relatedness out of the discussion. If you look him in the eye when you ask, he will know you are really wondering what is going on with those two.
The more you tell us over and over, that this is JUST friendship, there is NO chance of reconciliation from him and you dont want it anwyay.. the more I dont believe you!!
But you coping admirably as usual Mish and soldiering through it. xxx