Not long ago, No Doubt leader and sometime solo star Gwen Stefani broke up with Gavin Rossdale, her husband of many years. And earlier this month, she came at him with the bitter grown-folks divorce song “Used To Love You.” Earlier today, as Idolator points out, Stefani performed it for the first time on Ellen, bringing a level of intensity that you don’t often see on daytime TV. Watch the performance below.

“Used To Love You” is out now on Interscope.