Better Together by Jack Johnson is a song that is perfect for Ethan's point of view. Lena is running away because she is afraid of hurting Ethan and he is on his way to find her because he loves her and needs her. Ethan wants to help her not be so scared so he is trying to explain to her that he isn't running away because it doesn't matter if she turns dark or light, he will love her through it all. That's why this song is perfect for Ethan's point of view.