"Adam and I had been together since I was 17. He was my only boyfriend," the 27-year-old told the Times. "That's the only person I've been with for the past 10 years. So (losing) our relationship more than the marriage was the big part for me to deal with.
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Emeli Sande ended her marriage to Adam Gouraguine after just one year
"Having a friend who'd been my best friend for so long… losing that support and structure in my life was the biggest thing."
She continued, "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.'
"And that's so hard to explain to someone. I can't explain it now."
Emeli, who debuted a new look at the MTV European Music Awards in Glasgow on Sunday night, confirmed that she is going to keep the tattoo on her left breastbone which reads 'I love you Adam' in Serbian.
Emeli Sande unveiled a brand new look at the MTV European Music Awards
She blamed distance and busy work schedules on the breakdown of the couple's relationship.
"I was on tour all the time and I think it was quite unfair of me to want his world to fit into my life so much," she said. "He'd come on tour then he'd go away for three months on a marine biology expedition somewhere.
"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."