Ashton Kutcher and Mila Kunis are virtually inseparable. According to media speculation, the celebrity couple recently got engaged and have a baby on the way. Plus, the two actors have teamed up to star in an upcoming "Two and a Half Men" episode next month.

Earlier this month, CBS announced that Mila Kunis will make a guest appearance in her finance's hit comedy series, which will mark the couple's first appearance together on television since they starred in "That '70s Show," reports The Hollywood Reporter. The two met back in 1998 on set at the Fox sitcom and have been dating for the last two years.

In the April 10 episode, Kunis will play Vivian, a young, beautiful and free-spirited world traveler who shows up on Walden's doorstep. In turn, Walden, who was about to propose to someone else, will feel an instant connection with her and become convinced that she's the one, reports CBS News.

CBS released photos of the two on set shooting the episode, which filmed before their pregnancy news broke on March 23.  

Unfortunately, fans of "Two and a Half Men" will have to wait until April 3 for the next all-new episode of the popular comedy series. However, when it returns, Brooke D'Orsay will reprise her role as Walden's ex-girlfriend's Kate.

CBS issued a press release and an official synopsis of the episode, which reads, "Walden gets an invitation to his ex-girlfriend's boutique opening. Meanwhile, Gretchen wants to spend more time at Alan's (a.k.a. Jeff Strongman) house."

During the next episode, "West Side Story," Walden will get an invitation to the grand opening of Kate's boutique. Although their relationship was based on the lie that he told her about being a poor man named Sam, eventually their romance was able to evolve into something more, notes CarterMatt. Kimberly Williams-Paisley will also return as Alan's new love interest, Gretchen, on the April 3 episode.

"Two and a Half Men" S11E18, "West Side Story," airs on Thursday, April 3 at 9 p.m. EST on CBS.