L'Un dans l'autre (2017)
Directed by Bruno Chiche

Film Synopsis

Pierre and Aimée have been the best of friends with Eric and Pénélope for years.  Both couples are perfectly settled and they make the most amiable of foursomes - until the dreadful day when Pierre and Pénélope realises they have fallen in love with each other!  Realising that they cannot keep their affair a secret from their respective spouses any longer they decide to end the relationship.  Before doing so, they agree to share one night of passion together, the hope being to extinguish the fires of desire once and for all.

The next morning, Pierre and Pénélope wake up and discover, to their total amazement, that they have exchanged bodies.  Pierre now finds himself in Pénélope's body, and vice versa.  The only course of action open to the lovers is to accept the situation and live the life of the other as if nothing has happened.  This is not quite as easy as its sounds.  Pierre, as Pénélope, is now partnered with Eric, and Pénélope, visible to the world as Pierre, is now hooked up with Aimée.  Life was complicated enough before this body swap fiasco.  Now things are going to get a hell of a lot worse...