Katy Perry and John Mayer are reportedly reuniting to record a duet they wrote together, 'Who You Love', for Mayer's new album, Paradise Valley.
As per sources, the song gives a lyrical insight into the couple's irresistible attraction to each other and reveals that the reason they split-up in March was because Mayer wasn't ready to be in a relationship, the Mirror reported.
In the duet, Perry's 'love giggle' can be heard at the end of the tune.
Perry, whose own album, Prism, will be out on October 22, had previously admitted to Vogue that she was madly in love with Mayer long after their break up and he had dedicated a song to Perry during a concert in July.