Truth be told, Sirius was a little shocked with Lily didn't try to persuade him to stay at the castle and tell him over (and over) that he didn't need to go with her. He knew he didn't really have to go with her but he was never going to pass up the excuse to spend time with her. Especially when he hoped to distract her at some point along the way.

His mouth curled up. "I expected nothing less," he said, though truthfully hoping that they wouldn't find the poor thing. That way, they could spend their time doing other things.

"For how often they tell us to stay out of the Forbidden Forest, it's remarkable how many times they send us into the said forest."