Olly Murs and Caroline Flack decided not to date one another for the sake of their careers.

Olly Murs and Caroline Flack

Olly Murs and Caroline Flack

The 31-year-old heartthrob has admitted that although there was chemistry between them from the beginning, he and Caroline chose not to pursue a romantic relationship so that they could work together on 'The Xtra Factor' and now 'The X Factor' itself.

Asked about Caroline's recent confession that she "nearly fancied" him, Olly said: "It all stems from a tweet she did in 2009, which she tweeted when I was on the show and auditioned, saying she fancied me and obviously then we started to work with each other and when we first worked with each other, we were both single so it was kind of like we were flirting, having a lot of fun and then we realised this should never happen, if we want to work together we can't be doing this."

Olly - who, along with Caroline, was hired by Simon Cowell to replace long term host Dermot O'Leary on the main show - also spoke of his disappointment at having to stay in the UK when the judges and contestants get to jet off to exotic locations for the Judges' Houses stage of the competition.

The 'Wrapped Up' hitmaker told ITV's 'Lorraine': "That's one of the most exciting things that Simon spoke to us all about this year. They wanted to do live Judges' Houses. How that works, I don't know, but yeah, me and Caroline have to do it in a studio seeing everyone tanned in St. Tropez or Ibiza and there's us in miserable London!"