Top Gun star Tom Cruise has reportedly been secretly dating actress Laura Prepon for months.

The 51-year-old Mission Impossible actor was first romantically linked to the That 70's Show star last year.

Tom is believed to have asked Laura out after spotting her in new comedy-drama series Orange is the New Black.

Speaking to the New York Post newspaper's Page Six, a source said: ''It's the buzz on the set of her show.''

Laura previously dated Malcolm in the Middle actor Chris Masterson, while Cruise was previously married to Mimi Rogers, Nicole Kidman and Katie Holmes.