"The Heart Never Lies" is the thirteenth single from the British pop rock band McFly. It was released on 22 October 2007, as a part of the band's All the Greatest Hits album. The song can also be found on the original Mail on Sunday edition of their fourth studio album Radio:Active (2008). Rumours were around that the song was going to originally be called "We Are The Lovers", but then the name "The Heart Never Lies" was officially confirmed on the band's official website and Myspace.

The song debuted at number three on the UK Singles Chart, being beaten by Take That's "Rule the World"' which charted at number two, and Leona Lewis' "Bleeding Love", which debuted at number one. Although The Heart Never Lies debuted at number three, it sold 9,000 more copies than their last number one hit Baby's Coming Back did in its first week (40,000 against 31,000). "The Heart Never Lies" also reached number sixteen in Ireland.

"The Heart Never Lies" was played for the first time at V Festival on 18 August 2007. The band also performed the song at the Blackpool Illuminations on 31 August 2007. The performance was different from the one at V however, as lead singer Tom Fletcher, couldn't make it to the show, leaving Danny Jones to sing the song alone. BBC Radio 1 were the first radio station to play "The Heart Never Lies". McFly themselves the song in to Scott Mills on 11 September 2007. McFly performed the song on Ant & Dec's Saturday Night Takeaway on 15 September 2007. This was the first TV performance of the single.

In McFly's My Life in Music interview, Fletcher stated that the song was actually inspired by the band and that over time, it evolved into a love song.

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