Regulus | Remus
Do you know why I kept everything so wrapped up? Why I never told anyone I was trying to kill Voldemort? Why I never said anything to anyone? Because I knew I was going to die. And if Sirius knew? He'd have tried to get himself killed interfering, trying to stop me or - or worse.
The only way to keep him safe was to make sure he didn't know anything. And now he's here. And he knows, and he's broken and if I go back, what's going to happen? What's going to happen to him? Who is going to take care of him -- you? You can't even take care of yourself.