The Fool does indeed notice Devin's increasing attentiveness, and he's hardly oblivious to the kedan's clumsy advances, either. Under other circumstances, he might delight in the opportunity to watch Devin bristle and posture like some sort of wild animal in need of marking its territory--to a point, of course. The Fool is vain, and a bit of possessive jealousy flatters that vanity, but he won't encourage it to excess.

At the moment, however, he has no interest in encouraging it at all, for he has caught sight of Trahearne entering the shop, and all of this suddenly bodes very ill.

"I know my own measurements and will make the garment myself at home," he says to both Devin and the kedan shopkeeper, suddenly tense and uncomfortable, and motions to the till. "Let me make my purchase and we'll be off; you have other customers."

Customer, singular. The Fool steals a glance back at Devin that is almost pleading; please, behave. (Don't pick a lethal battle with his only remaining friend in this city.)