With a mock-disgruntled face, Tavi tells him, "Max, I don't want to know."

Ehren, while starting to smile a little, is also hiding half-alarmed amusement. "Has it ever occurred to either of you that you might be a little insane?"

Tavi blinks at him, owlishly. "...I'm really not, no matter what he tells you," waving at Max. "I'm very logical."

It's the first of many such conversations in their lives.