In point of fact, Allumin knows Diabhall better than many do, even back where they came from - the trouble is, of course, that he can't remember most of it yet. Often, Diabhall has considered sitting him down and simply telling him, at length, more about himself...but knowing what he himself knows of emotionally-charged memories and trauma, he has, until this point, kept most of it close to the chest until the younger elf is ready to hear it.

That does complicate things now, mind. And of course Allumin is right...they have both changed.

He just doesn't know to what extent.

"I may not have to apologize, but it is what is correct."

The silence broken and the topic moving along in a businesslike fashion (that's what this is, right? Allumin has been kind to him, of course, but - oh, what is going ON-), Diabhall continues to detangle his very long hair with his fingers, long-since already washed.

"...I would appreciate that, actually. I personally suspect some manner of brain damage," tone still light, chilly, despite the implications of the statement. "But I can't rule anything out as of this moment. I do not want to be kept from my work, but if something is wrong and it should become a problem...well. We can't have that."

Now that they are both talking, the older elf has shifted to his usual affect in these situations...unashamed of his own body, and paying no mind at all to Allumin seeing it. (In fact, might he be stealing the occasional sharp, rosy glance at his compatriot's muscles? Surely, surely not, right?)

After all, whether he recalls it or not, this is far from the first time they have bathed together.