Sienna Miller wants to share the screen with her on-off beau Balthazar Getty.
The Edge Of Love actress thinks a movie that sees her acting alongside the US oil heir would go down a storm at the box office, reports The Sun.
But the blonde beauty's people have told her the public might think it's unfair to Balthazar's estranged wife, who he has four children with.
"Her advisers are warning how unpopular that would be," a source said.
"People haven't taken to them as a pair due to the way they got together."
The insider said Sienna's advisers "fear people will find it a bit too sickly -- and as though they are rubbing his wife's face in it".
However, Sienna is said to be convinced it "could be movie gold" for her and Balthazar, who stars in hit TV series Brothers And Sisters.