R u kidding? LIIs are Fe-dual seekers... they can have obnoxious emotionality per my understanding. Re: gait, I read somewhere that people were making an observation that LIIs can sometimes walk a little bit like a frog (which actually did ring true for an LII ex-coworker of mine), so maybe the "floaty, dancing" walk is consistent with LII.
And yes your bf does in fact sound alpha NT from what you described. I think either ILE or LII can start lots of projects and not finish them. EDIT: just looked at his pic above, and he does actually VI alpha NT too. ur right.
Your type isn't quite jumping out at me though yet, even with the extra pics. I could see you as LII possibly. So that would make you and your bf mirrors, which is why you dont feel it's duality. Same quadra though, so it's def a good relation anyway.