S! TV BREAKING: Katy Perry is back with an ex!

Only a little over a week ago it emerged that Katy Perry had left her DJ boyfriend Diplo as things were getting a bit too serious for her liking. It looks like Katy Perry has gone back to her old roots in her new love affair. But which one of her ex’s has the pleasure of dating the 29 year-old once again? The singer has dated John Mayer, Florence and the Machine’s Rob Ackroyd and even been married to Russell Brand in the past.