Robert Pattinson will be expected to discuss "everything" in his first television interview since Kristen Stewart's affair scandal.

The British star will promote his new movie Cosmopolis on Good Morning America on August 15.

There was speculation about whether the chat would avoid questions about his private life and just focus on the film. However, sources close to ABC insist the TV show will have "full access" to Robert and plan to address Kristen's illicit romance with married director Rupert Sanders.

"Everything's on the table [for discussion]," a source told New York Post.

There are also reports that Jon Stewart will be interviewing Robert for The Daily Show next week.

Both appearances were scheduled before Kristen's affair was revealed.

Meanwhile, 22-year-old Kristen appears to be struggling in the wake of the attention surrounding her personal life.

The Twilight actress was seen losing her cool at a minder outside a gym in Los Angeles. The pair were spotted shouting and pointing at each other this week.

Kristen has publicly apologised to Robert following her infidelity, while he has so far remained silent about his heartbreak.

The 26-year-old hunk is believed to have moved out of the home they share together.