There he was. His head stuck in a book like the swotty git he was. Sirius forgot that Remus himself was often to be found with his attention focused on a tome - to him it was not the same thing at all. Sirius flushed at the sight of his enemy, his body instinctively stiffening.
He dug his feet into the floor, his distaste for Snape getting the better of him, reaching out to Remus to steady himself as he forced himself to take deep breaths. This was going to be harder than he had thought, he saw.
The only thing which kept him in this place was Remus, and his promise to his friend. He ignored the look he was getting from Madame Pince. She frowned and shushed the student who stood before her, unnecessarily.