The DNCE frontman, who had a high-profile relationship with Gigi Hadid last year, has been with the model "for a while now," reported People magazine.
"Joe is super happy with Daiane. He's pretty content with the relationship, which is out of character for him," a source said.
Joe, 27, has been linked to a few other models in the past year, and was first spotted going out to lunch in Los Angeles with Sodre in July.