There is nothing insincere in the way Viatorus treats him. True, it's a little odd, and his politeness is reflexive, but he's also a terrible liar. Besides, Rocket hasn't been anything but polite and nice thusfar. There's a hint of a smile at the corner of his mouth, so he's not feeling quite as awkward as usual, which is always a good sign.

"Oh, no, no. She's my wife." And he finds as soon as he answers that it still feels strange to say. In turn, Viatorus nods towards Groot. "Are you his... guardian?"