I think it was an independent movie probably from the late ‘90s or the early 2000s about a trial of an alleged rapist. Showing flashbacks in a split screen (The girl’s recollection VS the boy’s ) and you can’t know wich one is true until the last scene. I saw it in México broadcasted by a local tv chanel that usually present art films.
Could it be ‘Body Shots’ (1999, with Jerry O’Connell and Tara Reid?)