Note: this is spoiler-free, because these “truths” exist only in my head, far beyond the books …
Hannah and Jude are married, and Taylor stays with them when she comes home from uni in Sydney, where she and Jonah are friends with Frankie, Will, Justine, Tom, and Tara. Ben, of course, introduced them all.
Puck lives with Sean in his father’s house; they raise horses together.
Ron almost has a heart attack when Rose brings home her boyfriend Scorpius.
When Leo asks Stargirl to marry him, she hands him the same note she got from him years before.
And when she is older, the book thief falls deeply in love with a Jewish fist-fighter.
Cor eventually knocks Corin down– when it comes to Aravis.
Viola is there when he wakes up.
And, of course, Eleanor and Park live in Minneapolis … in the apartment across the hall from mine.
Thankyouverymuch.
Image credit: Ulf Bodin
JACKIE LEA SOMMERS 
Just read Jellicoe Road a couple of months ago, and YES to that! I also think Hannah and Jude have a baby.
I imagine/want the same thing for the book thief, SO MUCH.
Hannah and Jude and a baby, omgosh, so much YES.
Markus Zusak has offered his opinion on what happens to Max and Liesel post-war, but I prefer my own ideas. 🙂
Wait, Taylor and Jonah are just friends! Really?
Am in love with the Ron/Rose/Scorpio drama, though.
Nope, not JUST friends … but friends with the folks from Saving Francesca!
Rainbow Rowell has mentioned she isn’t necessarily done with Eleanor and Park yet which immediately made me crave an adult novel in which they’re reuniting as adults after bumps and bruises in their separate lives (love, career, and otherwise) and have to navigate what it means that they were each other’s first loves and what it means that they may be falling in love again, as adults.
That’s my headcannon.
ALSO, don’t you just love the term headcannon?
Ooooooooooooooooh, would love that!
And YES, head canon is such a hilarious and ironic and lovely term. 🙂