Ed Sheeran has been writing songs for Taylor Swift.
The 'A Team' hitmaker - who has previously penned tracks for One Direction - was asked by the country singer to work on her new album because she is a "massive fan" of his own music.
A source told The Sun newspaper: "Ed and Taylor have been in the studio in LA a lot over the past few weeks working on new material.
"She's into her British music and became a massive fan of Ed before asking to work with him recently.
"There is a mutual affection between the pair."
It has not yet been decided whether Ed's songs will be released as singles, but even just a credit on an album track will earn the 21-year-old British star around £200,000.
The source added: "It's still to be officially decided how the material will be released but just a single credit on her album will be worth big money.
"Taylor's country sound is massive around the world."
Earlier this month, Ed revealed he was working with a "cool" artist while in Los Angeles.
He tweeted: "writing songs with a very cool artist today :) (sic)"