Well, Tonic doesn't SEEM like he feels upset at Nick's answer being a bit lackluster compared to his own, so Nick is relieved there. Not that he let's himself think too hard on why he doesn't want to see Tonic upset.

"Shoot," he replies, and while he tries to sound put out by the further questions Nick has very few actual secrets, possibly even none at all, aside from the ones that are secrets even to himself.