Los Angeles: Singer Katy Perry and John Mayer have taken their relationship forward by singing love duet `Who You Love`.
The couple wrote the duet together for Mayer`s new album "Paradise Valley", which is releasing on August 20. The song gives an insight into the on-again couple`s attraction for each other, reported People magazine.
Perry said her laugh at the end of the tune was "just a love giggle".
"It`s like the ones that Mariah Carey had in 1990. I was going for that, I think I was just so happy ... You`re catching the real moment there," she said.
Mayer has previously dated Jennifer Aniston, Jessica Simpson and Taylor Swift while Perry ended her marriage to comedian Russell Brand after 14 months.