"Thank you for letting me use my heartbreak and sharing it with me", Miranda, 33, said to the audience during her speech.
Miranda Lambert and Blake Shelton were married for years and had a contentious marriage and divorce.
"Miranda is exhausted of Gwen incessantly gushing about her romance with Blake", said another source.
She added at the time: "I feel really strongly about the only talking I needed to do, I've done and it's on tape".
A canceled flight on the way to the Academy of Country Music Awards had Miranda Lambert wishing there were "More Like Her" - "her" being her genius assistant. Fans can remember the shocking news in July 2015, when Lambert and Shelton announced their split.
Shelton is now dating Gwen Stefani while Miranda Lambert and East have been going steady. Watching their romance unfold on national TV was obviously hard for Lambert, who moved on to East a few months later. It appears that until now, there are times she still needs some alcohol in her system.
Lambert also won Female Vocalist of the Year for the eighth year in a row, making her the first woman to achieve the feat.
The ethereal look reminded some of a wedding gown, according to Fox News. Failing to do so runs the risk of living in the past and getting too hung up on Shelton, which could affect her romance with East.
Ah. Another Sunday evening in my Oklahoma. "Blake is hoping that Miranda finds new inspiration for her music and that she doesn't spend the rest of her life singing about him". Stefani and Shelton are now in the middle of a new season of The Voice.
It seemed only yesterday when Gwen Stefani went through hell and back after her painful divorce with ex-husband and Bush frontman Gavin Rossdale.