"I know! No one can, no one will. James is... James was my best friend, my brother, my other half. No one will ever replace him in my life. But Moony... You’re important to me, too. You’re my best friend, too. And I... I know that this past week has been a lot of us just—living in each other’s pocket—" well, seeing as Remus was jobless and technically homeless, it was more Remus living in Sirius’ pocket— "and I know it won’t last, but I hope... No matter what happens, I don’t want to lose contact with you. I want to be able to speak to you even if we’re far apart."