Niall co-penned the song with Irish born and LA-based Ruth-Anne Cunningham who has also written for Bebe Rexha, Britney Spears and Martin Garrix. She told OfficialCharts.com
"I'd written some songs for One Direction's Four
record and had only really met them in passing, but Niall was aware of me because he knew there was an Irish songwriter on the team. We had a session set up for their fifth album which was me, Niall and another producer and we really hit it off straight away.
What I love about him is that he had a book of lyrical ideas. You And Me was the first song we wrote and then Seeing Blind the next day… it was so easy. Slow Hands
was the last song for the record. When I found out I had five songs on the album, I couldn't believe it."