One to another

This is a recent French flick about a bunch of kids in their early twenties and an incestuous relationship between two of them. It's supposedly based on a true story, and it's really well done: very well cast, very well directed, very well shot, and interesting throughout. It's also got some quirks to it that make the look very distinctive, for instance the lipstick color used on all the characters, which a mauvey sort of tone. This is one of those movies that I secretly hope was made for 10K and made a million...