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OTRC: Mila Kunis visits Ashton Kutcher on 'Two and a Half Men' set

Ashton Kutcher and Mila Kunis reunited for FOX's '25TH ANNIVERSARY SPECIAL' which aired on April 22, 2012. (Beth Dubber/FOX)

Mila Kunis visited Ashton Kutcher on the set of "Two and a Half Men," but the pair has remained mum on their rumored relationship.

The 29-year-old actress and Kutcher posed for photos with fans on the CBS set on August 10. One such fan, who is friends with series star Angus T. Jones and refers to herself as Stalker Sarah, posted photos of herself with Kunis and Kutcher on the set of the CBS comedy series.

"When I first saw Ashton, they were filming a scene and he was trying to walk quietly backstage, he saw me and said hey and gave me real quiet a high five, then tiptoed over to where Mila was sitting," Sarah M wrote on her official Flickr page, along with her photos. "It was a great first night back on set. I can't spoil the plot - but make sure you watch this season. It's going to be excellent."

The 34-year-old actor and Kunis have been linked together since April, when they were photographed together outside a sushi restaurant but Kunis' spokesperson said the two were not dating, adding that they "have been friends for years and met up for dinner with a group of friends."

They have since been photographed holding hands and kissing, but have not commented on reports that they are dating.

The pair portrayed a couple on "That '70s Show," which ran from 1998 to 2006 and helped launch their careers. The two actors recently appeared together alongside their former co-stars Wilmer Valderrama and Laura Prepon on the "25th Anniversary Special" on the Fox network.

Kutcher and wife Demi Moore split in November 2011, after 6 years of marriage. Kunis split from her long-time boyfriend Macaulay Culkin, star of "Home Alone" in January 2011, after dating for eight years.

It was reported in May that "Two and a Half Men" had been renewed for a tenth season. The show took a hit in the ratings after the departure of Charlie Sheen but retained a steady audience with 15 million viewers a week.

Kutcher made his debut as billionaire Walden Schmidt on the season 9 premiere in September 2011, months after longtime cast member Charlie Sheen was axed following a meltdown.

The 10th season of "Two and a Half Men" is slated to premiere on Thursday, September 27 at 8:30 p.m. ET/PT on CBS.

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