So Woman aka Tricheuse movie

Lawyer Clemence Vallardin must convince her landlord that she is married in order to secure the lease on an apartment. She spins the same tale for Cedric who is madly in love with her and is willing to do anything to please her, even if it means offering Clemence a piano. Cedrics tenacity begins to annoy Clemence and when the piano arrives at Clemences place, delivered by a man named Farid, Clemence persuades Farid to pretend to be her husband and asks him to come and live with her in order to get rid of Cedric. This is when the landlord comes to ask her to defend one his friends, the famous counsellor Etienne Lavoisier. Farid has two daughters whom hes raising alone, and if that werent already enough, Clemences mother then arrives unexpectedly.