Ed Sheeran thought Taylor Swift was going to be a "douche bag" before he met her.
The 'Lego House' hitmaker - who co-wrote 'Everything Has Changed' with the blonde beauty for her upcoming fourth studio album 'Red' - insists the 'I Knew You Were Trouble' hitmaker is the "loveliest person" he's ever met but he expected her to be irritating prior to their first ever encounter.
He said: "Working with Taylor Swift was cool, writing with her was cool. She's like a really sound person. With American acts in England, once you get to a certain point you know everyone is humble and cool, but in America when you get to a certain level you kind of get a douche bag pass. Certain artists are allowed to be douches.
"Taylor Swift is one of these people who is the biggest selling female artist in the world right now. Her last record sold just as much as Adele's I think, which is pretty mental to think. I expected her to be one of these artists who is allowed to have a douche bag pass but she was the loveliest person I've met."
As well as being a successful singer, Ed - who wrote One Direction's forthcoming single 'Little Things' four years ago - is hoping to make a big name for himself as a songwriter just in case his career goes "tits up".
Speaking in a video interview with SB.TV, he added: "The One Direction thing isn't me featuring as an artist. I wrote the song about four years ago and they asked for it so they got it.
"Careers can end instantly but when you're a songwriter you can have a career for the whole of your life so if everything goes tits up for me tomorrow then the cut I've got on the One Direction album, the Taylor Swift album, the Wretch, the Devlins, I think it's quite an important thing to get my name out there as a songwriter."