Songfacts®:

• Norwest Christian College schoolmates Luke Hemmings, Michael Clifford, and Calum Hood formed 5 Seconds of Summer in late 2011. The trio invited drummer Ashton Irwin, whom they knew through mutual friends, a few weeks later. They played their first show at Sydney pub, Annandale Hotel, on December 3, 2011. This song, released exactly a decade later, finds them celebrating their 10-year anniversary.
• The song finds 5 Seconds of Summer looking back at their early days when life was simpler. They miss those times when they fantasized about their future, as now they dream of the past. The group wish they could go back to 2011 when life was better.
• Calum Hood and Michael Clifford wrote the song with Machine Gun Kelly's regular writing partner Nick Long ("My Ex's Best Friend," "Forget Me Too," "Bloody Valentine").
• Clifford co-produced the track with the band's Sounds Good Feels Good producer, John Feldmann.