Dear Jelsa shippers, hear me put,  so I have seen that people think that our ship can't happen because of the time difference, and I have something for ya that can back this up and make thouse people feel kinda stupid. Anyway it is possible to happen because Jack Frost is a spirit that lives in no time zone, which means time dosent do anything to him, and he dosent feel the time passing by, and if he wants to he can travel through time because he is a spirit without time limit or anything, spirit like him don't really need to care about time because they are spirits, so the ship can happen because he could go through time and meet elsa.

Also people that say " Emma is mother of elsa and anna and jack is their uncle, so jelsa can't happen" well hahahah, I got you good now, well elsa and anna lived in times from 1400 -1600 and jack lived in times of 1700 cause in the movie it was 2013 or 2012 and in the movie he woke up 300 years before pitch came back, so Emma can't be their mother and also because color of eyes dosent match.

Here you go jelsa shippers, I backed you up a little, I don't my homework for ya.