Remus smiled, unable to suppress his reaction to the idea of Sirius being jealous of his books. Grubby little book fingers, indeed. Not that he was going to complain at being snuggled against Sirius after so long. It felt comfortable and familiar and did so much to ease the pain and grief he'd felt since Sirius had fallen through the veil. "Of course I'm right, Padfoot," he said. "And I love you too. So much." More than Sirius would ever realise. He probably would have kissed him then, if not for the sudden presence of Harry.
He froze at the small, embarrassed voice, sighing as Harry left the room. He gingerly unwound himself from around Sirius and allowed him to get to his feet, not wanting to interrupt this moment between his lover and the boy he thought of mostly as a son. Still, he couldn't help the sudden, utterly ridiculous feeling that he was now superfluous. He knew it was the ever-present insecurity that came with loving someone like Sirius. Someone who could have anyone he liked and for some reason, quite possibly insanity, shackled himself to a poor werewolf. He shook his head, knowing he was being stupid. Sirius loved him and Harry was very dear to him. He just wanted them both to be happy, and he knew that both of them being here would do that. So he stood silently in the doorway of the kitchen, letting them talk and watching with a small, fond smile.