So is Bae Peter Pan?
Which sadly means it all went as predicted long ago (most assumed Neal was Bae and Peter Pan) - I was really hoping for more of a real twist than that. So all the watch and hatter stuff was a red herring after all. Bummer.
Maybe if fiancee Tamara turns out to be Tiana... but at this point, that's probably predictable too.
If anything, she's likely Wendy, though I have no idea how they'd reconcile that.
She could always be the HER who's investigating Storybrooke after becoming suspicious about things Neal has told her, I suppose. Especially since she's the first new and significant female character we've been introduced outside of Storybrooke.