He was right. The Doctor did know, well enough, how Rose had likely reacted to interacting with the version of himself she was more familiar with. The last he had spoken with her, she had been cold. Angry. Bitter, because he had chosen to leave her behind with a man that was so very him, but so very not at the same time. Sort of like the two Doctor's standing in the same room now, though with less alien attributes, such as the bonus of having two whole, beating hearts. When confronted on the matter, the Doctor had tried to explain that it was what he thought she had wanted. That, for a second, it almost seemed as though she were finally happy, raking in the opportunity to settle into a life with the almost-Doctor without having to worry about chasing him across the stars in order to do so. She had seemed happy. He thought she had. He had been very wrong. Betrayed was a good word to describe it, really. She must have thought him very daft and foolish, to have believed she'd ever be happy living that life. Perhaps he was, even with all the knowledge he prided himself on carrying.
"She's got every right to be cross," The Doctor offered, turning round rather pointedly. It was a sensitive subject for himself, surely, but he knew that it was probably threefold worse for Other Him. Fresh wounds, those were, and he was fairly certain that picking at them wasn't going to make this whole 'getting along' thing any easier on either of their parts. That didn't mean that the topic wasn't one that interested him. As far as matters filed into the massively large folder of All Things Rose were concerned, the Doctor was always going to be more on the emotionally invested side of things. Which meant that it was very much in his nature to poke and prod at the matter, even when he knew that it was best that he shouldn't bother with it in the slightest.
He was going to keep on poking about it, that was for certain. But now, with Other Him in his current state, he thought to give it a temporary rest. He'd get off easy today, mostly on the default that he needed to rest and heal before taking on more headaches.
"She'll come around," the Doctor added, "she always does." He said no more than that, propping the bandages back down onto the table he'd snatched them away from and turned back around to look over the diagnostics that Other Him had been working on. It didn't much seem like Other Him was going to be playing the role of action guy anytime soon -- the radiation really had done a number on him. Noting that he was visibly grimacing from the pain, the Doctor moved away from the table he'd been lurking by and reached for the scanner. "Let me help," he insisted, hoping that Other Him wasn't going to be too proud to let his future self lend a hand.