There had only ever been one other time in his life when Remus hadn't been able to turn to Sirius for comfort, or to comfort him. They didn't talk about it, but it'd been the Whomping Willow Incident and in the aftermath, Remus hadn't spoken to Sirius for a period of time because he'd been so hurt by the whole thing. But even then, he'd come around and they'd been back to their old ways of not-admitted co-dependence. That whole, saying without saying how they felt thing that seemed to be their pattern of behavior all the way up until, well, everything went to hell in a hand basket.
"I do," he said. "I was.. My judgment grew a bit clouded, just as I know yours did of me. When I kept saying you were innocent and everyone else kept telling me no, throwing my attachment to you in my face saying it wasn't allowing me to be objective, I eventually stopped arguing because I didn't know what else to say. But it was only because I couldn't.. I didn't get to see you. I couldn't talk to you like I am now. But I know in my heart you could never.. You would never do anything to hurt them. Just like I think, deep in your heart, you knew I wouldn't either. Things just got so twisted. The war did things to us, Sirius."
He sniffled and wiped his eyes again. "I'm sorry. I'm sorry for so many things that you haven't even experienced yet. I'm sorry I'm not -- I'm not me to you right now. I'm just, so sorry."