As it is now believed that the singer and X Factor co-host is dating former show contestant Diana Vickers in a "casual" capacity.

Now since they are both single they have been in touch."They're just fooling around at the moment and having a laugh with each other.

Neither wants anything serious as they have both come out of long-term relationships."Olly split from his girlfriend of three years, property manager Francesca, in September due to his manic schedule.

While Diana is said to have recently split from long-term boyfriend George Craig, who she has been dating since the beginning of 2011.

(left to right) Simon Cowell, Cheryl Fernandez-Versini, Rita Ora, Nick Grimshaw, Caroline Flack and Olly Murs arrive for the X Factor auditions at the SSE Arena, Wembley, London. Diana also recently parted ways with George Craig, whom she had been dating for four years. Now since they are both single they have been in touch," a source told The Sun.

There’s an obvious attraction between the pair of them and they’re both young and good-looking,’ a source told The Sun.

‘They’re just fooling around at the moment and having a laugh with each other.The claims come weeks after the Dear Darlin' hit-maker and his girlfriend-of-three-years Francesca called time on their relationship as he struggled to make time for her due to his packed-out work schedule.Telly host: Olly - who presents The X Factor with Caroline Flack - elaborated: 'Me and Diana are friends, we've known each other a long time. He said: "I've just gone through a break up with my girlfriend, which has been quite sad, quite a difficult couple of weeks."Diana previously confessed that the Troublemaker singer was her X Factor crush and even supported him on his UK tour in 2013.The X Factor alumni were both finalists on the reality TV show with Olly coming second in 2009 and Diana coming fourth in 2008. Neither wants anything serious as they have both come out of long-term relationships."Diana is said to have recently split from One Night Only's George Craig, who she started dating at the beginning of 2011.