Quadrophenia (1979)
A chick has a boyfriend but she still flirts with another guy every time they come across each other and eventually makes out with him and then has sex with him in an alley while a riot is going on.
Actors: Sting
The Grotesque (1995)
Sir Hugo is more interested in reconstructing dinosaur bones than in paying attention to his wife, Lady Harriet. He’s not thrilled when daughter Cleo brings home her betrothed, Sidney, who aspires to be a poet. The new butler, Fledge, provides Lady Harriet with the attention she’s been missing and then seduces Sidney. Did he have a role in Sidney’s disappearance as well?