"That part, he will understand, with time, I am guessing. He - understands things sometimes better than many others. Most others." Which is why Damian can't let him go, even when he was so angry he wanted to shake him for betraying his trust. (Worse than shake him.)

Damian's mouth twists to one side at the 'life is not fair' comment, but he doesn't reply to it. Not with words. Instead, he lets the silence stretch around them, then raises his hand to touch Rayner's wrist.

"You should be resting."

Which is not exactly the same as I'll leave you to rest, now is it.