[5] The song was written by Julian Bunetta, Jamie Scott, John Ryan and band members Louis Tomlinson and Liam Payne.

[6] In an interview with MTV News, when Bunetta was asked if the song was named after someone called Diana, he replied "Can't tell!

She compared the track to "Don't Stand So Close to Me" by the Police for its sound and style, as well as "The Boys of Summer" by Don Henley.

[10] Rebecca Twomey of Cosmopolitan remarked, "The song has the band's signature romantic style but it showcases their vocal ability too.

He also added, "Production-wise, its sound is firmly rooted in modern pop, though this is still a song that plenty of parents of One Direction fans should appreciate.