Gwen Stefani performed her new single during Sunday night's 2015 AMAs in Los Angeles. Pictured: Stefani on the American Music Award red carpet. Getty

Gwen Stefani took the stage at the 2015 American Music Awards in Los Angeles Sunday night to perform her latest single, “Used To Love You.” Her performance, which was introduced by the cast of the 1995 hit film “Clueless,” comes one month after her music video for the ballad hit YouTube.

Stefani, who is fresh off her split from fellow musician Gavin Rossdale, opened up about the meaning of the song on “The Ellen DeGeneres Show” on Friday. The 46-year-old singer said she wrote the song after it became public that she and Rossdale, 50, were divorcing, EW reports. “It was super emotional,” she told DeGeneres.

While Stefani’s new music pulls at the heartstrings, the former No Doubt songstress doesn’t appear to be heartbroken anymore. Stefani is believed to be dating her “Voice” co-star Blake Shelton. Stefani gushed about her rumored boyfriend on “Ellen,” saying, “He knows every single '80s song. He literally is a musical jukebox. He knows everything about music; it’s crazy.” When asked by DeGeneres if he's a good kisser, Stefani blushed.

While footage of Stefani’s AMAs performance of “Used To Love You” is not available online, fans of “The Voice” star can watch the official video for her single on VEVO below: