The age of Mike Comrie is officially over: Hilary Duff is now dating personal trainer John Walsh. The Disney alum and former “Lizzie McGuire” star took to Instagram to post a black-and-white kissing picture Sunday, which left any doubt that she still had feelings for her ex-husband.

Duff, 29, first talked about her new relationship on “Good Day New York” last month. “We have [found a little ‘like’ with each other],” she told host Rosanna Scotto. “We’ve known each other for a really long time and he’s a great guy and we have a lot of fun together. It’s nice to have that excitement in my life.”

Even though they started out as friends after meeting at the gym, things soon became serious. “They are officially dating,” a source told Entertainment Tonight Online Sept. 26. “They started as friends and are now full-on dating. They are having fun and Hilary really likes him. They are getting pretty serious. Jason is with Hilary in New York now and will stay with her there until she finishes filming. Everyone is so happy for her. She deserves the best.”

Duff’s divorce from Comrie was finalized in February — a year after they filed documents. The couple shares a 4-year-old son, Luca, together. “They remain best friends and will continue to be in each other's lives,” her rep said in a statement at the time. “They are dedicated to loving and parenting their amazing son, and ask for privacy at this time.”

Comrie maintains a good relationship with Duff’s sister, Haylie. He was spotted with the older Duff, her fiancé, Matt Rosenberg, and their 1-year-old daughter, Ryan, at a farmer’s market in Los Angeles last month.

“They’re all still close,” an insider told Entertainment Tonight Online. “It’s amazing how they have been able to stay on good terms, especially for Luca. Haylie and Mike always had a great relationship, and Mike and Matt are friendly. Mike is a great dad and really loves Luca.”

Hilary Duff John Walsh Is Hilary Duff moving on from Jason Walsh to Scott Eastwood? Pictured: Actress Hilary Duff and personal/celebrity trainer Jason Walsh attend 'Rise Nation Fitness Studio's Los Angeles Grand Opening' Aug. 21, 2015 in West Hollywood, California. Photo: Getty Images

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