Maybe Edward will dump Bella for Jacob.
Warning fans to stick around for the post-credits scene, Kel told The Insider: "They're gonna love it, and Bill even told me that, stay for the credits - there's a really special thing happening."
Well we just don't know what to expect. Is Edward Cullen going to leap out of the screen and cradle us in his arms? Or perhaps Bella will wake up to discover it was 'all a dream'.
Speaking of which, we reported earlier this year that the film's conclusion will differ from that of the book - but Kellan reassured fans that it was done simply to add 'a little more flavour'.
He said: "Every film's been building and building, and Bill Condon really had a great idea with ending the series with Breaking Dawn 2, and just adding a little more flavour to parts of the book that weren't there, but he elaborated more on.
"I think the fans are really going to enjoy it."
Let's hope so. We'll have to wait until November 16 to find out though. What do you think the credits scene could be?