It shouldn't be as much a surprise as it is that X would be willing to drop everything to help Devin do Christmas shopping for his partner. He's still wrapping his head around the fact that X knows him inside and out, and maybe in return X is trying to make it up to him.

If he wanted, Devin could blend into the crowds better, but there's no need and not much point, either. A pretense would only shield him, and X knows better. "What a coincidence," he returns dryly, but not unkindly. A moment later, and he gestures vaguely to their surroundings. "I figured this area is the right mix of artistic and ostentatious that it'd be strange to not find something he'd like here."

Even if it's small. The Fool likes his trinkets, after all, and Devin has noticed that as much as her penchant for color and flair.