This was penned the day after 5SOS wrote "Youngblood
." Bassist Calum Hood recalled that Ashton Irwin and songwriter Andrew Watt (Camila Cabello's "Havana
") "were sitting on the couch and they had the, 'lie, lie, lie, lie' and we're all like, 'Alright, let's come back in tomorrow and we'll finish the idea.' And that's how we got 'Lie to Me.'"