WOW! I WASN'T expecting that, even though, now that I think about it, from the beginning, everything was building to reach this point. There were these tiny details here and there that could very well signal this kind of ending.
I absolutely loved it! So different from the rest. Even Peter has a shred of hope. Looking back, I think that he might have liked her for some time. The way you described his words and actions when in her presence, make it clear, to me at least, that he was interested in her from earlier on, and was not happy or approving of Sirius' relationship with her. I am very glad that you have given him some sort or ending too, possibly a happy ending. He is really disregarded in most Marauders stories.
If all your stories end like this, I might read them all :D. Seriously, it was a brilliant idea! You handled the possibility of a relationship between Lupin and Sirius very well, never giving away too much, always maintaining it vague, just enough to make readers wonder if that would indeed be the reason behind all those rumours, AND keeping them in character. Even now I'm not sure if they do have something going on :))
Author's Response: Haha, It's great to have surprised you with the ending, though it's equally great that you were able to trace back the clues. Writing this was oddly like writing a mystery because I knew what I wanted "the trick" to be in the end, and just had to build up to that point slowly, giving hints, but never giving it away (I actually do this a lot, when I think about it, very strange).
You loved it! *squees* That means a lot - it was quite a risk to take with a Sirius/OC story because it's very unconventional and just the thing to anger/frustrate the hardcore OC-shippers. Peter certainly does have hope now that Sirius is out of the way. Ellie was blinded by Sirius's charms, but Peter smartly waited things out, knowing what the outcome would be, and hoping that Eleanor would turn to him in the end. I imagine Peter have a stricter moral centre, but he's too quiet to actually say anything, especially in front of his friends because he'd be worried about angering them - it makes him appear weak, but it's more shyness and a lack of pushiness. But it does make him perfect for Eleanor, and I'd like to think that they had some sort of happiness for a little while. ^_^
Read them all? Well, I don't think they all end like this. With a twist, certainly, but not always with a happy one - rarely happy, actually. Thank you very much for the lovely compliments! It's wonderful that you enjoyed this story! :D