Tran, who has been absent from Brown's social media networks for a while, set the record straight by addressing her singlehood on Twitter.
"Not dating anyone...," the model wrote.
Fresh from rehab, Brown, 24, has not made any reference to his relationship status on any social media websites, but did hint that he was working on new music by posting a photo of himself in the studio.
The couple had been on-and-off relationship from quite a sometime.