Songfacts®:

• Patrick Stump sings of someone wanting to be alone with their lover for eternity. Bassist and lyricist Pete Wentz told Kerrang! magazine: "I really let rip lyrically. Wanting to be alone together forever with someone is a feeling I've had a gazillion times. To me, this is more throwback Fall Out Boy."
• The song is actually two different tunes spliced together. One was penned by Stump and Wentz, the other by guitarist Joe Trohman and both sounded coincidentally alike, with different perspectives. Trohman told Kerrang!: "It wasn't supposed to be a Fall Out Boy song, but it took the best aspects of the pop side the guys worked on and the aspects of mine which were kind of shoegazery, and made it almost cinematic."
• Fall Out Boy released a music video for each track on the album, which together make up the The Young Blood Chronicles musical film. In "Alone Together," the fourth segment, the guys are being tortured separately by female captors. Stump is bound to a chair in a chapel and is being monitored by machines, drummer Andy Hurley is in a living room being forced to listen to terrible music, and guitarist Joe Trohman is straitjacketed on a stage, where he's pelted with rotten food by an audience of children. Meanwhile, Wentz manages to seduce and kill his torturer with a hook and springs rapper Big Sean (who guests on the track "The Mighty Fall") before being captured again. Sean watches as the band - including a clearly disturbed Stump, who now wears the hook - are loaded into a van.
• While the song has a resemblance to older Fall Out Boy fare, the guys went into Save Rock And Roll, their fifth studio album, with the goal of creating a more modern pop sound. It had been five years since they released their previous album, the polarizing Folie a Deux, and a fresh start was in order. The gambit paid off, and they earned their second #1 on the albums chart.