Ellie Goulding set up Calvin Harris and Taylor Swift because they are both "good people".
The 'Anything Could Happen' singer - who is dating McBusted's Dougie Poynter - played matchmaker between her two famous friends because she instinctively felt their pairing would be successful.
Speaking to the new issue of Cosmopolitan magazine, she said: "How did I set up Taylor and Calvin? It just kind of happened.
"They're both good people, both dear friends. I thought it might work - and it did."
Ellie and Taylor became friends after meeting on a talk show in 2012, and the British pop star admits she was worried about acting like a "t**t" in front of the 'Blank Space' superstar.
She recalled: "I was really nervous because she's such a legend and I remember thinking, 'Please don't act like a t**t, Ellie, don't say anything stupid.' "
Ellie relaxed when Taylor quoted one of her less well-known songs to her.
She added: "I thought, 'Wow, that's cool, Taylor is a badass.' "
As well as Taylor, Ellie is also good friends with Adele and adores the 'Hello' singer's sense of humour.
She said: "We've been friends since MySpace days - she really makes me laugh.
"We talk about everything. Our lives, the world, the same things I talk about with my friends from school who do 'real' jobs."
Though she has a string of famous friends, the 'Burn' hitmaker is still great pals with the people she grew up with and she would love to be invited to a school reunion in the future.
She said: "High school and primary school are so special to me. If anyone said, 'We're having a reunion', I'd be so excited."
Tagged in Dougie Poynter Taylor Swift Ellie Goulding