A shy teen boy has a crush on a girl in his class, and she uses that to convince him the class hunk, a French-Algerian boy, has been making sexual demands of her. She lures the teen hunk into the showers where he strips, expecting to have sex with her, before the first boy surprises and stabs him. The boy and girl go on the run together.

They're captured in the woods by a hermit, who chains the boy to his bed and the girl in a cage in the basement. He tells the boy, "Boys are fucking, girls are for eating." He then introduces the youth to the delights of his prostate, and the boy is transported into an ecstatic fantasy world every time he's fucked.

Eventually the girl gets free and kills the man, and the young pair go on the run again, only to be captured by the police who'd been hunting them.

Does anyone know the movie?