"I am not fixated! It just seems like the sort of thing a person ought to remember, you know, when he's -" Ron bit his tongue. He could see Hermione entrenching herself, and they'd covered this ground before - and even if he was pretty sure he'd won (he couldn't quite recall), it never ended that well. "Look," he began again, trying for a more reasonable tone. "It doesn't matter. It's fine. It's just he doesn't really seem to think about it, you know."