Earlier this month, K-Pez sparked speculation that she was dating the singer-songwriter after being spotted 'holding hands' with Mayer in Los Angeles.
Now, People magazine has claimed that the couple have called time on their romance, just a few months after first hooking up.
A friend said to be 'close' to the musicians told the publication: "They'll end up as friends.
"They were honestly having fun. People made it out to be far more than it was."
The Sun has suggested that it was Mayer's decision to end their relationship, with an insider telling the American magazine: "She’s really upset about it. She is making it seem like it wasn’t serious with John, but she is hurt.”
Following her divorce from Russell Brand, the Wide Awake singer has also been linked to Florence + the Machine guitarist Robert Ackroyd after meeting him at Coachella.
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