We just need Emma to get herself put under a sleeping curse. TLK never lies, and is the only way to resolve the triangle. 😉
Seriously though, I’m cautiously optimistic that the storyline won’t suck, be boring, or too drawn out. Once all 3 of them are back in the same world, and Hook sees that Neal and Emma still love each other, I don’t imagine there being a whole lot of spiteful, fighting, triangle-ish stuff. Hook will be trying to repair his own relationship with Neal as well, which will impact his actions. I think they’ll all be mature enough to let everything work out, and I don’t think Hook and Emma’s relationship will be the type of situation where they’ve declared undying love for each other or anything, so they’ll be able to adjust just fine while still maintaining their friendship. That’s what I’m hoping for, anyway.