"By the Way" is the sixth single from Theory of a Deadman's album Scars & Souvenirs, released on May 18, 2009.

The song features Chris Daughtry and Robin Diaz on back-up vocals.

It is about a girl leaving her boyfriend without saying anything to him and he now thinks about her all the time and wishes she'd come back.

It shows Tyler Connolly walking around an abandoned house with his "former wife" as a ghost lurking around him.

Neither Chris Daughtry nor Robin Diaz, who sing backing vocals on the song, are featured in the music video.