Yep. There are two theories for this.  Elsa got her powers from Jack somehow or  Elsa will meet Jack someday and they fall in love.
Just imagine what their arguments would be like! | Wouldn't they make the cutest couple though?
Guys I think I've come to the conclusion that I am crazy about Jelsa. I apologize in advance
Let them in, let them see by AwesomeShippuu on DeviantArt
adorbs. I ship it so hard
La Reina Elsa y Jack Frost
depressed love of jack and elsa by jackandelsa1
Jack Frost x Elsa from http://sevnilock.tumblr.com/ --- absolutely stunning.
Ship #2: Jelsa, or Elsa and Jack Frost. I think they would be adorable together. Jack also has ice powers just as Elsa. He could help her control it. Elsa isolated herself for years and so did jack. This is why they are perfect to me.
I don't ship them all the pictures always look stupid but this is .... Wow but I still don't ship them