Songfacts®:

• This track was written and produced by the UK production house Xenomania, who are best known for their work with Girls Aloud. Cilmi commented to Digital Spy: "The chorus is like the Bee Gees and the bass line is so funky!"
• Gabriella Cilmi told Digital Spy that she enjoyed collaborating with Xenomania on the song. Said the Australian singer: "I really like working with Brian [Higgins] because I think he brings out the best in me. On 'Hearts Don't Lie', the funny operatic vocal in the chorus started with me mucking around. He knows how to make my silliness good. Hopefully we can work together again - we did have a few tiffs, because when I'm recording I sulk, but I think it all turned out for the best in the end."
• This song's music video has a '70s-theme, which finds Cilmi rocking down to her local discotheque. She told Digital Spy it was a lot of fun to shoot, adding: "It was the best time I've ever had on a video shoot actually, because I got all my friends and family in it - my cousin from Australia plays the dark angel! It was actually shot at Brixton Academy, which people are always surprised to hear, but once you take down all the posters and clean the place up a bit, it's got a great Art Deco vibe that fits perfectly with the song."