"It'll come in time. You're already far ahead of where I thought you might be." not enough to be worrysome but- enough to be a pleasant surprise. It's the easiest, simplest thing in the world to turn his head and brush his lips against Isaac's cheek- so he does. "Well done. The next file's in the queue. All you have to do is pull it up with this command-"

He reaches past Isaac to type it in, demonstrating and surrounding him simultaneously.