And events conspire to push Harry & Susan together even as Harry & Luna further develop their relationship. I do think Dumble's absurd reactsions are going to come back and bite him, big time. For that matter, his heavy-handed move with Shacklebolt isn't going to do Shack much good, either.
Hermione seems to be a most supporting friend and I suspect Dumbles isn't going to know what hit him when she teams up with Harry, Luna, and Susan to redefine the "game". I suspect the only one likely it less will be Tom and that Scrimgeour won't like it much better than Dumbles will.