Sirius reminded himself that he should have expected this. Without Peter, what proof did he have? Just the Marauder's Map. If Remus hadn't looked at it today and seen Peter's name, he might never have believed.

He took a step back and stared at Remus.

"It's been twelve years," he finally said. "I can wait a while longer."

Maybe if he said it firmly enough, he'd believe it.