This ballad finds Matty Healy singing of a dying relationship where he no longer fancies his romantic partner. However, the thought of the girl with another lover still affects him.
The song has a similar theme to "A Change of Heart," which is also about a low point in a relationship. In that instance Healy tells his girlfriend: "You used to have a face straight out of a magazine. Now you just look like anyone."
The song was officially premiered as Zane Lowe's World Record on Beats Radio 1 on February 15, 2016.
Matt Healy originally wrote this about his aunt, but when he had an argument with a former girlfriend who thought "A Change of Heart" was about her it got him thinking and he switched its focus.
There aren't many songs with a scientist as the main character, but Coldplay's "The Scientist" is one of their biggest hits. The guy in the song is brilliant, but despondent because he's lost his girl after neglecting her for his work.