I've always had this feeling when reading the whole Warren/Paige affair was that Austen REALLY liked Paige, but disliked Jono and how he treated her thus he was one upping Jono by throwing her together with Warren.
I dunno if I'm making any sense here, but I see it too often in fanfiction when writers tend to break up ships if they felt one half of the pair was mistreating the other.