Yesterday, 61-year-old Alexander took to Twitter to say that he had spent the day working with James.
80s soul singer Alexander, who quit CBB this month, said: "Great day hanging doing our thing with the extremely talented @JAYJAMES."
Meanwhile, Jay cryptically wrote: "We cooking... @AlexanderO_Neal."
Are they writing music? Brainstorming potential collaboration ideas? Or working on a special project? Whatever it is, the snaps have definitely got fans talking!
Jay competed in last year's X Factor and was mentored by Simon Cowell. And next month, the former Royal Navy fitness instructor will be going on X Factor's live tour, which kicks off on 13 February in Belfast.
Also performing will be Only The Young, Lauren Platt, Stevie Ritchie,Stereo Kicks, Andrea Faustini, runner-up Fleur East and winner Ben Haenow.
Joining them in Manchester for two dates will be Paul Akister, who landed a late slot on the tour after he was dramatically voted off in a deadlock vote.
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!