Harry is more concerned about being left out of Hogsmeade than he ever is about Black. Although Harry should stay in the castle and protect himself, his priorities are those of a thirteen-year-old boy. Harry has sought adventure without meaning to, and he has always been wary of allowing teachers access to his personal life. J.K. Rowling shows Harry enduring some typical teenage trials. Harry mutters when responding to adults, and he pretends to be embarrassed when Ron's mother hugs him at the train station.
Lastly, Lupin's deft handling of the map situation reveals great loyalty to Harry, but also foreshadows the discovery of his own involvement in the map- making. He speaks with great deliberation when he warns Harry that the mapmakers may be trying to lure him out of the castle. He knows Sirius Black's involvement in the map as well, and his clear awareness at the danger of the map demonstrates to Harry not only the great disappointment that he has caused Lupin to feel, or the great protectiveness that Lupin seems to feel for Harry, but furthermore the multitude of secrets existing within Hogwarts, the makers of the map, the ends of the tunnels on the map, and the strange tension between Snape and Lupin.