First they were spotted taking a spin on a motorcycle in Hollywood clinging on to each other and now Ashton Kutcher and Mila Kunis' secret romance has indeed entered the fast lane.

The two have fuelled speculation of their romance after sharing a kiss at a Los Angeles party and displaying affection publicly.

It was a wrap party for Steve Jobs biopic starring 'The Two and a Half Men' actor Ashton Kutcher.

The party was well attended and despite being surrounded by many guests Ashton and Mila only had eyes for each other, reports UsMagazine.com.

The pair appeared to be in good spirit and Mila caressed Ashton's cheek as they sit at a table in full public view.

They have been increasingly inseparable in recent times, making it clear that there is more to this relationship.

They celebrated the 4th Of July together at his family's house last week, where they were seen sharing a kiss and cuddling during the day.

The pair have known each other for a long time and used to co-star in That 70s Show.

Kunis split from her boyfriend of eight years, 'Home Alone' star Macaulay Culkin in late 2010.

Ashton separated from his wife Demi Moore, 49, in November following claims of his infidelity.

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