"I'm Yours" made its debut on the British singles chart on December 12, 2008, at number 78 and then slowly climbed up the chart until it peaked at number 11.It spent the whole of 2009 on the chart apart from the final two weeks of the year, then re-entered in January 2010 and again in August, and has now clocked up 56 weeks on the official UK Top 75, making it currently the 15th longest runner of all time and the longest never to make the Top 10, and 84 weeks on the Top 100. I'm Yours was later featured as the Record of the Week on Scott Mills's BBC Radio One show on November 10, 2008.
"I'm Yours" spent 16 weeks at number one on the Adult Contemporary chart.
It has become his first top ten single in the US, peaking at number six on the Billboard Hot 100 and number five on the Pop 100.
On the Billboard Hot Adult Top 40 Tracks chart the song was number one for a total of nine weeks.
The single later received Mainstream Top 40 airplay, eventually topping that chart as well.
Due to its gradually building crossover appeal, the song has had extremely unusual longevity, not reaching number one on the Mainstream Top 40 until December 2008, ten months after its release and seven months after it debuted on the VH1 Top 20 Video Countdown.