Rocker Bradford Cox is set to make his film debut in upcoming drama The Dallas Buyers Club - as Jared Leto's lover.

In the film, which is based on a true story, the 30 Seconds to Mars star plays a cross-dresser dying of Aids and now director Jean-Marc Vallee has cast Deerhunter star Cox as his boyfriend.

The project, which also stars Matthew MCConaughey and Jennifer Garner, is currently filming in New Orleans, Louisiana, according to The Hollywood Reporter.