Ashton Kutcher met Mila Kunis on the set of That 70's Show back in 1998. But their off-screen romance really got off the ground in 2012, when Kutcher was still in the middle of divorce proceedings with Demi Moore.
Kutcher and Moore finalized their divorce last November, freeing the 36-year-old actor and tech investor to pop the question.
Photographers spotted Kunis, 30, out in Los Angeles with her mother on Thursday wearing a large rock on her ring finger.
Celebrity Breakups and divorces of 2014 [PHOTOS]