This is, to me, Breillat's best movie. The subject matter of the movie has been delved in by others, so I won't waste time on it.
A generic woman finds a gay man, to observe her and explore the perception that men have of women. During the course of four nights, the perception is dissected, and examined. The woman expresses, nude, before this male that is not attracted to her, her deepest concepts of the battle of the sexes. He in turn, although by definition not attracted to women, observes, comments and indulges. In the end, as in most of Breillat's movies, the questions are left for the viewer to answer, and also to ask.
The actress, Amira Casar is a beauty, and we see a lot of her. The acting is tightly done, and if appears stilted, it is because the situation is in itself stilted.
You will need a stong stomach to watch the whole movie, since there is a particularly revolting scene, but even that scene, fits with the story, and with the desire of the woman to be totally exposed, totally vulnerable and totally degraded.
I have watched some of Breillat's work (A real young girl, Romance) and to me, this is the deepest, most thought provoking of her movies. As opposed to the previously mentioned ones, that I watched once and resold, or gave away, I shall keep this one, and will probably watch it again, more than once, to dissect it further.
The DVD has an interview with the director, and there we find out why a body double was used for the close-up shots: She wanted a hairy person