Gwen Stefani is not holding back in her new single “Somebody Else’s,” which arrived on Friday (Sept. 20). The pop singer sings of a past relationship that was so toxic that she isn’t even upset that her ex has moved on with someone else.

Singer also opens up about the No Doubt reunion, creative missteps, and the inspiration behind her first solo album in eight years: "Each song was handpicked with meaning"

Gwen Stefani, whose exes include Gavin Rossdale and Tony Kanal, calls an ex ‘somebody else’s problem’ in new song