That said though, his tone shifts with Luka's and he folds his knees up to his chest, thinking for a long moment.

"I don't either. I... hm," he murmurs, pausing again. "I was expecting to argue it out, I suppose. There's too much information out there that only one of us knows." He huffs softly, his tone apologetic even though he's not apologizing, "What you said, it got, um, stuck in me, I guess. More then I expected it to." It got under his skin is what he means, but what are idioms.