Jack and Elsa knew they have their hearts for each other what if because of one single thing. One has to sacrifice something to be together. Or will they just have to give up their love and forget one another? Jelsa fanfic

Jack Frost is Elsa's imaginary friend at first but as Elsa grows older, Jack realized that he loves her but then she will die soon and he won't. Elsa also realizes that she loves Jack and she can't be with him forever. What's the solution to this?