However, The Sun has reported that the pair have split after for two years together. Nicole, 31, and Lewis, 25, blamed the split on stressful work schedules and the big year ahead for the Formula One star.
The couple, who met at the 2007 MTV Europe Music Awards, had been together since 2008. Despite their different careers, the pair would often be seen publicly supporting each other, with Nicole accompanying Lewis to racetracks all over the world and Lewis watching the Pussycat Dolls perform.
A statement from Lewis and Nicole’s spokesperson confirmed: "They have decided to go their separate ways. They want to focus fully on their careers and will remain close friends."