Katy Perry is single again Katy Perry Fri-24-Aug-12 15:56 Share this By Megan Slovak The relationship between Katy Perry and John Mayer is all over after only a few months. A source has confirmed is saying: "She's [Katy’s] really upset about it.” Another insider added: "She is making it seem like it wasn't serious with John, but she is hurt." Going out with a known womaniser as a rebound and expecting that to be the real deal is very silly Katy. You can do better! You May Also Like Very delicious lyric video for Katy Perry's song 'Birthday' Katy Perry has dyed her hair 'slime green' Was John Mayer cheating on Katy Perry? Become a fan of The Edge on Facebook and on Twitter .