He's nodding before he even realizes he's answering her, giving in to the offer she's just made. But it shouldn't be looked at as that, as having given in to something, because he wants to stay here, he wants to be with her and not have to think about anything for just a little while. He's so tired.

"I looked for him," he says. "For three days. I thought one of the gangs might have information. Harold was always digging into things that would have gotten him into trouble had anyone ever been able to trace him." And no one ever had, no one was as good as Finch was, but John was unwilling to accept that Finch could simply be gone. It was better to assume someone smarter existed in Darrow, someone who could track down a man as brilliant as Harold Finch and then make him disappear.

Because then John would have stood a chance at finding him and making those who took him suffer more than they'd ever suffered before.