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Blake Shelton sang about Gwen Stefani in front of ex Miranda Lambert

Isn't every awards show just a big room full of exes?

Isn't every awards show just a big room full of exes?

Sure, every industry has its stars that date, and dump, one another. But in a too-close-for-comfort moment from Sunday night's Academy of Country Music Awards, Blake Shelton and Miranda Lambert's shared history came front-and-center when Shelton performed his new single, Came Here To Forget.

The single is widely suspected to be about Shelton's breakup with Lambert — and his new, highly-public romance with his Voice co-coach Gwen Stefani. Yikes.

Shelton issues aside, Lambert's ACM Awards were a huge success, as she killed it on the red carpet:

Singer Miranda Lambert attends the 51st Academy of Country Music Awards at MGM Grand Garden Arena on April 3, 2016 in Las Vegas, Nevada.

And on stage with Keith Urban and ZZ Top:

Keith and Miranda mid-slay.

She also made her new relationship with Anderson East awards show-official, as the pair walked the carpet arm-in-arm before the show.