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Mila Kunis and Ashton Kutcher tying the knot?

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Ashton Kutcher’s quiet romance with Mila Kunis has reportedly blossomed into an engagement.

The former “That ’70s Show” co-stars have never been shy about PDA since they began dating in 2012, but neither one has talked much about the relationship.

Reps for both actors have been mum, with only a telltale photo of a diamond ring on Kunis’ left hand to fuel speculation she and Kutcher will soon be tying the knot.

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