Make a Jelsa Movie

The pairing are not yet canon due to Jack being a DreamWorks character while Elsa is a Disney character.

These two characters actually, although on the outside seem to be very different have a lot in common personality wise. Their sacrifices and love for their younger siblings (Jack died to save his younger sister. Elsa isolated herself to protect her sister whom she cared about even though it was killing her inside; sacrificing some of her childhood, all of her teen’s years, the start of her adult life just to keep Anna and her family safe from herself), and their loneliness, isolation: Jack was alone for hundreds of years, unable to interact with someone, while that Elsa was isolated in her room, far away from everyone, keeping herself in isolation).

Source: http://fanlore.org/wiki