Peter watched him warily, unable to conjure up a smile at James' small joke. He moved across the room from James, putting distance between them should James change his mind about hurting Peter. He nodded, nervously. "Yeah, er. Moo -- Remus told me. A-about everything. That, er, that I did."
Finally he let his eyes drift so that he didn't have to look at James, preferring to focus on the silver curve of the tray table's stand. This was harder than he'd thought it would be, and he still quietly nursed the notion of leaving during the middle of the night and letting nature take its course so that they wouldn't have to live with even the chance of him betraying them, again.
But, that was the coward's way out, and Peter was already tired of being a coward. He'd made terrible mistakes, and it was time to own them, and be a better person than he'd turned out to be. Guilt gnawed at him, turning his stomach, but he finally lifted his eyes to meet James'. "I'm sorry, Jamie. I'm... sorry. For everything. And that doesn't fix it, but I want you to know that I'm sorry as fuck for doing this to all of you."