Perry and Mayer collaborate on song
Katy Perry and John Mayer have showed their romance is still going strong by recording a song together.
The couple, who have been dating on and off for over a year, have teamed up for one of singer-songwriter John's new tracks, reported Rolling Stone.
The song, titled Who You Love, will appear on John's album Paradise Valley.
Katy, 28, and John, 35, originally started dating last year but split in March.
However, this summer it emerged that the couple were giving their relationship another go and last month John confirmed their relationship status when he dedicated a song to Katy as he opened his tour.
The star took to the stage at the Marcus Amphitheatre in Milwaukee and said the song A Face To Call Home was for "Katy, who is my face to call home".
The night marked John's first headlining show since doctors successfully repaired a granuloma in his throat last August. He told the crowd how Katy helped him after his operation, ordering food for him when he couldn't speak. "She was so patient," he said.