Arandor
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Dreamers (Bernardo Bertolucci's film, 2003).
Brief plot summary from Wikipedia:
The film takes place in the days leading up to and during the May 1968 events in Paris. Young American Matthew comes to Paris as part of a student exchange program to improve his French. He spends most of his free time at the Cinémathèque, enjoying modern films and film classics with other film-obsessed teenagers.
There he meets his peers, Isabelle and Theo, who claim they were conjoined twins at birth. The new acquaintances invite Matthew to move into their apartment while their parents are away. Gradually, the American realizes that Isabelle and Theo's closeness is on the verge of incest. Detached from the world of student unrest, all three wholeheartedly devote themselves to sexual and psychological experiments... Unfortunately, I didn't watch the film from the beginning. There are many different scenes in the film, but I didn't like it for that reason. I was most impressed by the conversations between the two guys and the relationship of this trio, which can be described as "free," but at the same time, they live in their own "little world," live for each other, and cannot live any other way. I tried to put myself in their place (rather, in Matthew's place), imagining that I lived with such a brother and sister (especially since I have acquaintances who could be these "brother and sister"). I won't say that I wouldn't like it. On the contrary, it seems interesting, I even like something about it, and I don't see anything wrong with it. Maybe I would even try it.
There he meets his peers, Isabelle and Theo, who claim they were conjoined twins at birth. The new acquaintances invite Matthew to move into their apartment while their parents are away. Gradually, the American realizes that Isabelle and Theo's closeness is on the verge of incest. Detached from the world of student unrest, all three wholeheartedly devote themselves to sexual and psychological experiments... Unfortunately, I didn't watch the film from the beginning. There are many different scenes in the film, but I didn't like it for that reason. I was most impressed by the conversations between the two guys and the relationship of this trio, which can be described as "free," but at the same time, they live in their own "little world," live for each other, and cannot live any other way. I tried to put myself in their place (rather, in Matthew's place), imagining that I lived with such a brother and sister (especially since I have acquaintances who could be these "brother and sister"). I won't say that I wouldn't like it. On the contrary, it seems interesting, I even like something about it, and I don't see anything wrong with it. Maybe I would even try it.
Be strong. Believe