He left her on her own.. only friend she had that actually listened for once but he didn't care about saying goodbye all she wanted was someone to lean on someone to stay close and she wanted Zach.

Emma and Zach have been best friends for years, and Zach invites Emma to visit his band Why Don't We in LA. When she gets there, her and Jonah immediately have a connection. But they soon realize that life is not some cheesy love story. Tragedy often strikes at the worst times.