Tom Cruise has been secretly dating fellow Scientologist and actor Laura Prepon for months, after being spotted on a date last year, according to reports.

The 'Mission Impossible' star and the 'That 70's Show' actress, who both practice Scientology, were rumoured to be dating last year and it's now been revealed that they've been seeing each other ever since.

The pair was spotted enjoying a cosy meal at a hotel in Los Angeles last November and despite trying to keep their romance a secret, Prepon's co-stars have reportedly found out about the relationship.

A source told the New York Post that it's the buzz on the set of her show.

Having known Prepon for years, Cruise is said to have asked her out after seeing her in her new series 'Orange Is the New Black', and picked her up for their date at the Manor Hotel in a vintage car.