Songfacts®:

• This guitar-pop ballad finds the One Direction guys in reflective mood as they sing of their broken hearts:
  
  How many nights does it take to count the stars?
  That's the time it would take to fix my heart
  Oh baby, I was there for you, all I ever wanted was the truth
• The song was released as an instant gratitude track for anyone who pre-ordered their Made In The AM album. Niall Horan told Apple's Beats 1 it was chosen as it shows off a different side of their sound.
• This was written by John Ryan, Jamie Scott and Julian Bunetta, the songwriters behind many of the guys' hits including Made In The AM's lead single, "Drag Me Down."
• The word infinity comes from Latin infinitas ("unlimitedness"). It describes the notion of the absence of an end in mathematics, philosophy, and theology. Other artists that have recorded songs titled 'Infinity' include Guru Josh, Mariah Carey and Rickie Lee Jones.