I don't know if you guys are actually privy to information that I don't have but I simply can't believe it is over for M&H. As I see it, Henry could be gone for any number of reasons, most having nothing to do with their relationship. Even if there was a falling out, most relationships I've ever witnessed have their ups and downs.
The weird thing about those boxes was they were sitting in the hallway for a couple of days and then it looked like Mira was unpacking them again. It was as if they planned on relocating and then something fell through?
Well, it's all speculation on my part.