On ne se mentira jamais is a French comedy written by Eric Assous. The story follows Serge and Marianne, a husband and wife team who have been married for 25 years and continue to have a passionate relationship. But after a small car accident, everything will change. Their joyful harmony gives way to doubt, which summons questions that plague humanity: Do we really know each other? The play, released in 2015, became an immediate success and won Assous the Molière for best living French-speaking author.