Ashton Kutcher kisses Mila Kunis

Los Angeles - Ashton Kutcher and Mila Kunis have been spotted sharing an intimate kiss.

The pair - who starred in TV series That '70s Show together - have repeatedly denied they are dating in recent months, but after they were caught in a passionate embrace, speculation is rife it is only a matter of time before they confirm their romance.

Ashton and Mila were seen locking lips at the Hollywood wrap party for jOBS - the biopic based on the life of late Apple co-founder Steve Jobs - and didn't care who saw them.

Mila - who was previously in a long-term relationship with Macaulay Culkin - recently claimed she was single, despite rumours linking her to Ashton.

'No such thing as secret'

She said: "I am totally single. Listen [Ashton and I] hang out. We've known each other for 15 years, we have mutual friends. We're comfortable with one another. That's it! There's no crazy love story, nothing more.

"I am very private and I've never commented on my personal life.

"The truth is I really am single. I don't go out because when I do, everybody sees me. It's like I'm having an illicit rendezvous because there's no such thing as secret in my life."

Two and a Half Men star Ashton has been single since splitting from estranged wife Demi Moore last year, after it was claimed he had cheated on her with a string of women.

Click here to see a photo of Ashton and Mila kissing.