[6] It was written by Tully Kennedy, John Morgan, Kurt Allison, and Lydia Vaughan, all members of Aldean's band and the production team New Voice Entertainment.

[9][10] Underwood explained the importance of the collaboration to Good Morning America:[11]Jason asked if I would sing 'If I Didn't Love You' with him.

[...] I felt like it was a little bit of an unexpected duet to other people, but I feel like I always knew at some point I'd probably sing with him officially, and this just seemed like the stars were aligning and it just seemed like it was going to be the perfect fit.In the United States, "If I Didn't Love You" debuted at number 20 on the Billboard Country Airplay chart.

It sold 29,500 downloads in its first week and drew 9 million streams during the tracking period and debuted at number 15 on the Billboard Hot 100 chart.

[18] Aldean and Underwood gave their first live performance of the song at the 55th Annual Country Music Association Awards at Nashville's Bridgestone Arena on November 10, 2021.