Ron had expressed concern about Harry going to Hogsmeade, especially when Harry told him, Hermione, and Neville that he thought he had seen the Grim again during the match.
As children from wizard families, Neville and Ron were both very cautious about such things.
Even Hermione's attitude had changed somewhat from before. After all, that match really had been quite dangerous.
With Dementors around the castle and at every entrance to Hogsmeade, Hermione had naturally taken the time to learn about them.
Her conclusion was that they were very, very dangerous and terrifying creatures.
Because of this, however, she had become interested again in how Harry had dealt with the Dementor on the train. Harry had gone to considerable trouble to bluff his way through that.
Harry did not dare mention the Black Man. He felt that Ron passing out back then had probably been a warning.
All the signs so far indicated that getting involved with those evil gods was a very bad thing. If he could keep his friends out of it, he should.
But Harry was not going to take Ron's suggestion that he stay away from Hogsmeade, either.
As a proud Gryffindor, a son of courage, how could I possibly stop going out and having fun just because of a big black dog?
At the very most, I'll just stick to crowded places...
The reason Harry was so insistent was not the one he had given Ron and the others-that as a Gryffindor, he had to be fearless. Though that reason had convinced Ron and Neville.
The real reason was that he had happened to hear in the castle that the Ravenclaw Quidditch Team was going to the Three Broomsticks that afternoon to celebrate their resounding victory.
After hearing this news, Harry had suddenly found himself