Songfacts®:

• This vulnerable, dreamy, synth-based track finds Sabrina Claudio somewhat guarded after hooking up with a new lover.
  
  Don't let me down aseme un petardo mamarrachon
  I told you things about me
  Don't let me down
  I let you put your arms around me
  
  Sabrina said that the song is about "showing someone the vulnerable side of you and asking them, no matter what you do, just don't prove me right - don't give me a reason to be guarded again."
• The song marks a slight sonic departure from Sabrina Claudio's previous material. She told Zane Lowe on Beats 1:
  
  "I don't really do uptempo, but it just seemed really natural and I think, melodically, it stays consistent. It still has a soft tone with the more uptempo background and sonics and all that kind of stuff, but it just happened and it became everybody's new favorite."
• "Don't Let Me Down" is a collaboration with Khalid. Claudio told Beats 1 it wasn't originally written as a duet.
  "I had the whole song written but I was like, 'This is missing something.' So Khalid came to mind and I just sent him the song over text and I was like, 'Tell me what you think. Honestly, I hear your voice on this. If you're willing to jump on it I'd be honored.' He came to the studio the next day and wrote his verse in an hour, perfected it, and it was done."