Igenlode Wordsmith

I can see an argument for pairing Elsa off with Kristoff on the grounds that they're both really interested in ice (indeed, Kristoff is spellbound by the awesomeness of what Elsa can do with ice), and I suppose you could argue that Hans's repeated actions in defence of Elsa when he supposedly can't wait to bump her off indicate that he has some kind of suppressed attraction to her... but it really doesn't come across that way in the film.

(I haven't read the Elsa/Hans fanfic either; I just noticed its existence...)