Ashton Kutcher and Mila Kunis are already engaged, so why not add a little screen love on top of it? Kunis will join her co-star on That 70s Show and now in life in his own show, as his love interest no less. According to the New York Daily News, Kunis will play Vivian, a traveler who unexpectedly drops into the life of Kutcher's Walden and has an instant connection with him. But there's a plot twist, of course. Walden is about to propose to someone else.

Ashton Kutcher, Mila Kunis
Onscreen and off, the two were inseparable, even before the engagement announcement. 

This could be a great thing for the show. Since the two actors starred together on That 70s Show for eight consecutive seasons, we already know that they have on-screen chemistry.

So was the decision made after K & K’s recent engagement? You know, so they could spend more time together at work. Obviously sitcom production doesn’t work like that, but it would be pretty romantic if it did. Us Weekly first reported the news of the couple's engagement last week. The pair have been together since 2011, but have kept their relationship out of the public eye as much as possible. 

According to a press release, quoted by the Daily Mail, Kunis’ character is described as a “o is described as “a young, beautiful, free-spirited world traveler.” Sounds like a much needed breath of fresh air for the show, currently in its eleventh season.

Ashton Kutcher, Mila Kunis
Apparently, Kutcher and Kunis aren't afraid to mix business and personal life.