Keith Urban and Miranda Lambert reminisced about the time they were in love during a performance of 'We Were Us' on the 2013 CMA Awards broadcast.

Of course, Urban and Lambert were never really a couple — Urban has been married to Nicole Kidman for years, and Lambert is in love with hubby Blake Shelton. But they did a great job of pretending for the sake of the performance.

Lambert sang the first verse into her bedazzled microphone while Urban played guitar. He joined in on the chorus of the infectious track as Shelton sang along from the audience.

'We Were Us' is the second single from Urban's current release 'Fuse,' and the follow-up to his chart-topper 'Little Bit of Everything.' Both Urban and Lambert have multiple CMA Awards to their credit and are nominated once again this year.