Maybe because I am a male, I found this movie appealing due to the lead role. I think Virginie Efira can act, and does so very well. Unlike some major stars, it seems to me that she is making a real effort to act this role. For IMDB to list "Little imagination and not a single laugh" as the top review made me write this counter-review.
As a non-French speaker, I did struggle with the subtitles as there is a lot of dialogue (not all subtitled, thank goodness). And the plot is "clunky", I would say: the on-again, off-again relationship of the defendant, the vindictiveness of the ex, the role of the young man, for example.
Yet, like most (all?) French comedies, it does have its charms. The sets and costumes help. But mainly, the exploration of a career-oriented woman who thinks only of her career and casts her lovers and friends aside in its pursuit, to the detriment of her happiness. OK, we have seen this before (and will again) and probably done better. But being drawn in by Efira is quite satisfying.