Remus had long since developed the sense of knowing when Sirius was and wasn't opening up to him. He tried to never push; if there was one thing to be said about Remus Lupin, it was that he was insufferably patient. Mostly he could talk around the front being put in place and figure out what was really going on without having to actually force Sirius to come out with it. That allowed him to comfort him or perhaps even indirectly calm him down without making a scene of it. Other times, should Sirius be having a bit of a fit from his temper or whatever the case might be, he'd sit quietly, let him get that energy out, then calmly address whatever it was constructively. Goodness, he missed those days. So much easier to handle than what they were dealing with at the moment.
Putting up a brave front, a semi-happy front, was necessary because it gave them a break from the heavy, tremendous sadness Remus had to share with Sirius. He still felt horrible about it but now it was done. If nothing else, Remus was all the more resolved to the fact that he knew Sirius didn't do it. No matter what anyone else said, no matter what the evidence suggested, he refused to believe it. He would no longer live in that state of wonder, or even question it. All he'd needed was one minute alone with Sirius.
"Yes," he agreed. "I should've thought of that." Remus held his hands to cup either side of Sirius' face, then slowly let them drop back down to his sides. Even just a few hours shut away behind those walls and that roof where they might be permitted not to think about what they'd just discussed was a reprieve Remus selfishly longed for. "Show me the way. I'm right beside you."