The split comes almost a month after Emma Roberts and Garrett Hedlund threw their son, Rhodes, a rodeo-themed first birthday party.
A source tells ET the 30-year-old actress and 37-year-old actor have broken up and"they are not living together." The source adds they're also"not romantically together."
The source also says Roberts and Hedlund"grew apart when Garrett was away working" but"they are still coparenting, and still doing things as a family." ET has reached out for comment. "Emma absolutely loves being a mom and is extremely protective over Rhodes," the source added."[Rhodes] is her whole world and has really centered her. She feels so appreciative to have family and friends who support her.""Every day is a blessing," Hedlund gushed at the time. "He's an angel."