What did Jack/Ellie mean when he said, "She can't lose them both?"
Towards the end of the movie Jack/Ellie is looking at pics from when Ellie and Sassy were kids and then recent pics of Sassy and Aspen. He then says, "She can't lose them both." I thought at first maybe he mean all three of them, Elli, Sassy, and Aspen were all best friends, and she lost Aspen, but kept Sassy, and now is now on the verge of losing Sassy too, but then I remembered that Aspen is "the new girl," so there's no way all 3 of them could have all been best friends.
"Age ain't nothin' but a number" -- Aaliyah