Remus couldn't believe it. He couldn't believe that only a day ago he had been talking to Lily about the possibility of a Sirius who didn't share his feelings showing up and now...now he was back. Sirius was back. His Sirius was back and he couldn't believe it. When the post had first shown up on the Network Remus' heart had sunk as he'd assumed the worst, but then he saw him talking to Rose and to Lily and it was obvious that he was the same Sirius that had been there before, but he hadn't wanted to get his hopes up only to have them shattered. Remus had missed Sirius so badly and had accepted the fact that he may never come back, but now he was back and Remus was appareting to the library to see him.
As he materialized on the sidewalk, Remus started at the man sitting on the pavement and his heart pounded against his chest as he realized that they had been in opposite positions only a few months earlier when Remus had shown up and Sirius had been the one staring at him, unsure of exactly how to proceed. Taking a deep breath, Remus took a few steps closer to him, "Sirius..."