Regulus hadn't accounted for Remus yelling, he realizes, but even now he can't bring himself to silence him. He clutches Remus' face in both hands instead, looking at him. "You can help," he says, softly, trying to break through his panic. "I need you to be able to tell Dumbledore. No one else can do it, and if you go with me you won't be able to. Please, that's all I can ask of you."

And another kiss, light, before he whispers against his mouth. "Don't think it's you. I was going to do this anyway. I need you to let me go. I do love you, I do."

He has to hurry now, glancing over his shoulder as he goes and shutting the door behind him. He has to go say goodbye to Sirius, too. He hopes he's already awake so he doesn't have to wake him. He doesn't have much time. He pauses outside the door though, wiping his face and schooling his expression calm with a faint smile. Compartmentalizing.

Then he steps inside the room to speak to his brother.