Nova radio host Tim Blackwell and his girlfriend, producer Lizzie Baxter, remain together nearly a year after debuting their romance, after Baxter posted a Father's Day tribute on Instagram that referred to Blackwell as "daddy."

Baxter, 28, who works as a producer on Nova's Fitzy & Wippa, posted a photo alongside Blackwell and his three children and wrote, "Happy Father's Day to our daddy!! Because I'm young enough to be your daughter too!!" Blackwell, 42, has three sons — Bo, 12; Alfie, 9; and Artie, 6 — with his former wife, Monique.

The couple first went public with their relationship around a year ago and made a red carpet appearance together at the 2024 ARIA Awards in November, where Blackwell was hosting the ceremony. At the event he confirmed the relationship to Daily Mail Australia and described Baxter as his "date." Photographs from the awards show showed the pair embracing on the media wall.

Baxter's Father's Day post was shared on social media on Sunday and included the image of the couple with Blackwell's children. The post reiterated the public-facing nature of their relationship, which has included appearances at industry events since it was revealed.

Neither Blackwell nor Baxter issued additional comment in the post beyond the Father's Day message. Blackwell continues his role at Nova and remains a visible figure in Australian radio; Baxter continues to be listed as a producer on the Fitzy & Wippa program. The couple's appearance at the ARIA Awards and Baxter's public social media posts provide the most recent public timeline of their relationship.