Of course, he knew that even if Sirius had have let him in on this divine, cosmic plan, it wouldn't have made the slightest bit of difference. Remus would have still followed him blindly. Remus would have still been unable to let go.
Why won't you let me forget you? Looking at the breakdown of relationships and the power of memory, but with a hopefully optimistic ending, inspired by the fabulous Noisettes song "Every now and then." Disclaimer: I do not own the Harry Potter fandom or any characters/themes within it, or the song "Every now and then". I make no profit from writing this story.