An Australian radio DJ has taken to Twitter and Instagram to claim that she had a fling with US singer songwriter Demi Demi Lovato.

DJ Ruby Rose took to Twitter to say: “Think I’ll take a few days off while @ddlovato’s friend attack me for being a ‘scorned ex-lover’.”

The 27-year-old radio DJ later took to Instagram to say that she was the “only person Demi has slept with that didn’t sell naked photos of her.”

Both posts have been deleted, and Lovato has not addressed the rumours.

It was last month announced that Lovato is to join the cast of hit television series Glee as the lesbian love interest of character Santana.

The former X Factor US contestant, and current judge Lovato, will star as the lesbian lover of character Santana Lopez, played by Naya Rivera, who is excited at the prospect.