Not only did Gwen Stefani treat New York fans to a solo concert this weekend, she debuted a new song that might be her most personal yet.

As a part of the MasterCard Priceless Surprises series, the No Doubt frontwoman debuted a her new single, purportedly titled "Used to Love You," which is likely about ex-husband Gavin Rossdale. The poignant lyrics are telling, including Gwen singing the lines "I don't know why I'm crying / But I think it's 'cause I remember for the first time / since I hated you, I used to love you" which could be linked to her husband of nearly 13 years.

Gwen confirmed the song was a new single via Twitter before she gave its live debut. The song is the third new solo song she's revealed since announcing her third solo album.

The new track follows past singles "Baby Don't Lie" and "Spark the Fire," both of which failed to make much of an impact on the charts. Ideally, this new, very-personal single will connect with audience in a way the others could not and get us that new Gwen album we've been anticipating all year!