Over New Year, Ashton sparked speculation he and Mila had wed. Sending fans into a frenzy, the actor posted a picture to Facebook with the words 'Happy New Year [love] The Kutchers' carved into the sand.
While many took 'The Kutchers' to mean Ashton and Mila had finally tied the knot, the Two And A Half Men star recently revealed he and his lovely lady are still yet to marry.
Speaking at a Tech conference in Sydney, Australia, Ashton confirmed his and Mila's relationship status by calling the Friends With Benefits star his 'fiancée'.
Dropping in confirmation he and Mila haven't yet wed, Ashton told the crowd: "Last week I was walking with Mila Kunis - who's my fiancée.... We were walking and I had baby Wyatt strapped to me. She's beautiful."
Ashton's revelation comes after Mila played coy when asked about the recent wedding rumours.
When asked by Ellen DeGeneres what Ashton had meant by writing 'The Kutchers' as a plural in his Facebook photo, Mila played dumb.
Suggesting she had no idea why her beau done so, the US beauty replied: "I don't know. My daughter has his last name legally, thus there are multiple Kutchers."
The couple got engaged a year ago and even then, neither Ashton or Mila would confirm the news that they were set to wed.
Since their engagement, the couple have welcomed their first child together - daughter Wyatt Isabelle.
Following their baby girl's arrival, Ashton has said Wyatt is perfect, while Mila admitted it had been a "blessing" to be a stay-at-home mum for the first four months of their daughter's life.
"I didn't have to go back to work, and I took advantage it," she said. "I love that the first three months she and I were up every night and I figured her out, she figured me out."
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