The 'Next To You' singer had been dating childhood friend Adam for seven years before they tied the knot in a private ceremony in New York in 2012.
Now, it has emerged the couple split just one year later.
Emeli revealed her divorce heartbreak in an interview with The Times, saying: "We were mates, but maybe we shouldn't have been married."
The singer – who performed at the Olympics – told the newspaper her busy schedule and Adam's commitments as a marine biologist meant the couple spent a lot of time apart.
She said: "When we caught up it was great and we could tell each other stories, but it was almost like we were living our lives away from each other and growing into different people.
"And as soon as I got some rest and the madness stopped and I had a bit of a holiday, I was like, 'OK, let's see, what's been going on.' There were just lots of things. And stuff that just wasn't ... we were mates, but maybe we shouldn't have been married."
Emeli added: "Everyone thought I'd gone mad. 'What do you mean a divorce? We were all at your wedding a few months ago!' But there was just something inside me that said, 'This isn't the life. You're pretending to be someone else'.
"I don't want to call it a breakdown, but it felt like that."
Emeli's shock break up news emerged as she made an appearance at the MTV EMAs in Glasgow, Scotland on Sunday night.
The Scottish star joined celebrities including Ariana Grande, Ed Sheeran and Alesha Dixon at the Hydro Arena for the bash hosted by Nicki Minaj.
Red carpet pictures from the MTV EMAs:
Copyright: WENN Andreas Hübner / Future Image
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