Hilary Duff is setting the record straight on her relationship status with Matthew Koma. The pair made headlines last month when Koma referred to Duff as his "wife" on Instagram -- but as Duff told ET on Wednesday, they haven't secretly tied the knot. Duff and Koma got engaged in May, but haven't started wedding planning yet. I never can say no, because it could happen," she added, noting that music could become a part of the upcomingLizzie McGuire revival on Disney+. One thing Duff is sure about is her support for the Love Leo Rescue, which helped her find two of her dogs.

Did Hilary Duff and Matthew Koma secretly tie the knot? That's what some fans are wondering after the musician captioned a photo of the former Disney star "wife" on Instagram on Sunday. Koma commented, "Can't blame me tho ..."While Duff is set to head down the aisle, so is her Lizzie McGuire character. See what she told ET about the upcoming reboot in the video below. RELATED CONTENT:Hilary Duff Finally Shows Her Kids 'The Lizzie McGuire Movie'Hilary Duff Reveals Lizzie McGuire Is Engaged in Upcoming Reboot -- But It's Not to Gordo

"I have been working really hard to get back to my pre baby body before Banksy turned a year!" "She's such a big part of me and my life, and now she's 30, and I feel like I'm going to have to learn some of her quirky faces again. I can't tell you too much, but I think that people are going to be very surprised and excited," Duff teased. The new show going into production means that she's going to be extra busy. RELATED CONTENT:Hilary Duff Says Returning for 'Lizzie McGuire' Revival Is 'Surreal' (Exclusive)'Lizzie McGuire' Revival Series With Hilary Duff Is Coming to Disney+Hilary Duff Details Her Storybook Engagement: 'It Was So Sweet'