Sara, I agree that letting this slide would just be "more of the same". And any time I have let something slide with H, in later conversations he would admit that he knew what the right thing to do was, he just didn't do it.
So I can't just let it go. I will give him until he gets back tomorrow night to mention it, then I will ask about it. I am thinking a 4 hour plane ride should give him time to think/write if he didn't make time before that.
Then, if I have to mention it Friday night, he will have until Sunday to come up with a response. I am tired of being the one pulling the load. It is put up or shut up time. (I won't say it quite like that to H though!) I will use nicer, but firm, words if need be.