It looks and sounds great. Story is interesting and goes to an interesting place. Some weird actor choices were distracting but overall really liked it.
I was ready to genuinly like this one. I was personally curious as how they would do the story, if this was going to be a "fifty shades of family-envy" or something. Also I love Virginie Efira so I'll watch anything she's in.
Where this movie failed was that there really wasn't any chemistry and nothing convincing about the unfolding of the story.