In Remus's mind, and also the real world, motorbike advertisements never counted as books. But it was sort of adorable that Sirius thought so. He'd been reading his own book, an actual book in his case, until about ten minutes prior. It was nice and comfortable and almost sickeningly domestic in some ways. Like he and Sirius were a married couple or something.
He'd never say that he was fond of Sirius's coddling, the man wasn't his mother after all, but he was used to it. And it was familiar. Still, he rather hoped that Sirius would learn that he wasn't as fragile as his lover seemed to think. He'd survived thirty years of this condition. He didn't need to be protected now.
"I was thinking more along the lines of the two of us teaching him," he clarified. "And maybe getting his mother to cover potions. Give them a chance to bond."