This song finds Cardle weighing on the topic of failed romance. He told The Sun: "I've definitely had my fun. Some of my mates were marrying and having kids. I didn't even know if I liked the bird I was with, so we'd split and I'd move on. I wondered if I'd ever find someone. That's what 'Pull Me Under' is about."
Mike Campbell from Tom Petty & the Heartbreakers played the slide guitar on "Sixth Avenue Heartache." There is a connection here - Wallflowers lead singer Jakob's dad, Bob Dylan, played with Tom Petty in The Traveling Wilburys.