It sounded like things had gotten tense if Sabrina had to made her way to Regulus, dragging along the man she'd been paired with. "I guess it's to be expected that we get a few with homicidal tendencies while we're here." Not everyone could be a hero like so many of the people here were supposed to be.
Sirius wasn't sure if he wanted to talk, to say anything at all about what had happened, to anyone let alone to his brother. But there was a reason he'd sought him out first rather than anyone else he could have gone to. And Regulus for his part, at least noticed that there was something off with him. But how to put anything that he was feeling into words felt nearly impossible initially.
So Regulus filled in the space as they made their way up toward his room. Telling him about some sort of party that they might be having later in the week. "Maybe so," He agreed frowning at the idea of a party, how could he go to a party when he felt a little like he was coming out of his own skin.
"He killed me." He said finally when they got behind Regulus' door, even with the privacy charm he felt like he hadn't been able to say anything until they had yet another level of privacy. "It was -" He didn't really know what it was, but he didn't want to think about it too much either. "He thinks I killed James and Lily."