Songfacts®:

• Here, a torn up Weeknd addresses a former lover. He tells his ex he still misses her and regrets their relationship ending. The singer apologizes for his past wrong doings, which left the girl with a broken heart, and admits that it's his fault their romance didn't work out. The Weeknd pleads for another chance, promising to treat her better this time, as he now realizes "my heart belongs to you."
• The Weeknd starts off the haunting track by detailing his nightmares that stem from his desperate heartbreak
  
  Thought I almost died in my dream again
  Fightin' for my life, I couldn't breathe again
  
  The singer has touched on themes of mortality several times previously, including on his Starboy tracks "Six Feet Under" and "Die For You."
• The Weeknd wrote the song with:
  
  Frequent collaborator Belly. The Canadian rapper's previous writing credits include "Earned It," "The Hills" and "Blinding Lights."
  
  Canadian producer Illangelo. A long-term collaborator of The Weeknd, Illangelo helmed the entirety of The Weeknd's 2011 trilogy of mixtapes, several of his Beauty Behind The Madness tracks and After Hours' co-lead single "Heartless."
  
  Canadian producer DaHeala, whose other collaborations with The Weeknd include "Earned It," "Starboy," and "Blinding Lights."
  
  Bay Boy R&B singer-songwriter Mario Winans, who is best known for his 2004 single "I Don't Wanna Know."
  
  The Weeknd, Illangelo and DaHeala produced the track with additional production by Mario Winans.
• Asked by Variety about the tune's title, The Weeknd explained the song "is absolutely my thoughts at 4 a.m., alone, after everything is done."
  
  He added that he named the record after this song as the tracks are "all emotions and thoughts and feelings that I had late at night."