Rick Diamond/Getty Images for City Winery  07/31/2016 AT 10:50 AM EDT  got emotional during a concert when singing a song she cowrote with ex-husband  While singing her 2012 single "Over You" during a Tinley Park, Illinois, show on Friday, the country star broke down in tears and relied on the crowd to help her finish the tune.  The former couple wrote the song about a tragedy  judge experienced as a teenager when his older brother died in a car accident.  The 32-year-old singer told the audience she was having a rough night, as she was feeling hormonal and had been suffering from cramps.  "I told you I was a mess," Lambert told the crowd as she wiped away tears.  Later in her set, she began crying again during "The House That Built Me."  Miranda crying tonight cute cupcake #KeeperOfTheFlameTour pic.twitter.com/G5qamwoyMT  And we're CRYING. No sobbing! @mirandalambert @HollywoodAmpChi #HouseThatBuiltMe pic.twitter.com/PczThYoH0n  The onstage tears came just a day after Shelton, 40, made headlines for  and very public new relationship with  After meeting when they were both coaches on  , both Shelton and Stefani went through divorces around the same time.  "I won't forget that day," he says of when Stefani learned of his surprising split. "I looked over at Gwen – who I didn't really know – and she had these huge tears in her eyes. I thought, 'Wow, she feels super bad for me!' "  It turned that she was quietly in the  after two decades together. After Stefani opened up about her relationship's end, the bond quickly grew.  "It went from that, to checking in on each other once a week through email – 'This s--- happened to me, what happened to you?' – to maybe three times a week, then every day, to 'Hey, here's my phone number if you ever want to text.' Next thing I know, I wake up and she's all I care about, and I'm wondering if she feels the same about me," he says.  Now, Shelton declares that Stefani "saved my life."  "Who else on earth could understand going through a high-profile divorce from another musician?" he says. "You can't even imagine the similarities in our divorces."
The country singer broke down several times during a Illinois concert after Blake Shelton spoke out about his new relationship