-He'll think you're his mother.
-He already thinks that
-You'll get attached to it…
-I already am, and he's attached to me..
-first, there was nothing. nothing at all.
-and then?
-and then. there was a flame. A very large flame.
Jojo's relationship with Jack is symbolic of his attachment to his dead mother who he will not let go though his father urges and demands him to do so. Jojo keeps her flame alive in her music and his memories.