Kimblee isn't expecting it when Isaac stops; that lake is quite suddenly very fascinating, after all, and the steady pulling on his hand is enough to make it rather clear where they're going. As such, he nearly collides with him when Isaac stops short; he manages to stop himself before he does anything of the sort, but he does find himself stepping back, only to be momentarily confused when Isaac takes his other hand. He allows it, but the look in his eyes is a questioning one.

Isaac is clearly feeling very open with his emotions today; this sometimes happens when they're alone, and even if Kimblee doesn't know what to do with it, he isn't entirely unprepared, either. "That's good to know, Isaac. I've been rather pleased with how things are going."

The answer is a bit generic, but his tone isn't entirely insincere; he's managed to work this sorts of answer around to a point where it doesn't sound forced - at least, not to a point where Isaac will notice. Were he at all a better person, Kimblee would probably feel guilty about taking advantage of the social failure; however, he quite simply finds that he doesn't.