Gwen Stefani is opening up about her split from estranged husband Gavin Rossdale. The newly single Voice coach debuted a song titled “Used to Love You” during her MasterCard Priceless Surprises concert in New York City on Saturday, Oct. 16, and its powerful lyrics seem to hint at what went wrong with the Bush rocker.
“I just want to share a song that I wrote recently,” Stefani told the crowd about her personal new jam. “This song is really special.”
“I thought I was the best thing that ever happened to you,” Stefani sang while an emotional video of herself near tears played behind her. “I guess nobody taught you how to love.”
Other lyrics include “I used to know you,” and emotional lines like, “You go, I’ll stay, you can keep all the memories.”
Stefani, 45, and Rossdale, 49, split after 13 years of marriage this past August. 
“While the two of us have come to the mutual decision that we will no longer be partners in marriage, we remain partners in parenthood and are committed to jointly raising our three sons in a happy and healthy environment,” they told Us in a joint statement at the time. “To that end, we respectfully request privacy from the media during this time.”
The No Doubt singer and Rossdale are parents to sons Kingston, 9, Zuma, 6, and Apollo, 19 months.
Listen to Stefani’s powerful new ballad above.
