[Ren appears entirely unfazed by the sass, merely tilting his head with a light sort of smile.]

Oh? We're talking about whims and you can't make a guess at that...? [He wags a finger in a jokingly chiding sort of manner. Ren frequently does things that don't really have a point, because he's just that kind of person.] You said you wanted advice, but isn't more experience with that kind of person helpful too? That way I can be considerate of both of your needs...

[It seems like a sincere enough train of thought, at least, if a bit weird.]