Dumbledore will only leave from Hogwarts when there are none loyal to him!

The world had ended, so why had the battle not ceased, the castle fallen silent in horror, and every combatant laid down their arms? Harry's mind was in freefall, spinning out of control, unable to grasp the impossiblity, because Fred Weasley could not be dead, the evidence of all his senses must be lying -

And they'd [the Death Eaters] love to have me," said Harry sarcastically. "We'd be best pals if they didn't keep trying to do me in.

Training for the ballet, Potter?" yelled Malfoy.

Why don't you confer with Mr. Finnigan? As I recall, he has a particular proclivity for pyrotechnics.

Harry, Cedric, I suggest you both go up to bed," said Dumbledore, smiling at both of them. "I am sure Gryffindor and Hufflepuff are waiting to celebrate with you, and it would be a shame to deprive them of this excellent excuse to make a great deal of mess and noise.

You can have a very intense relationship with fictional characters because they are in your own head.