A third person in a relationship invariably creates problems. What happens when the third in a relationship is simultaneously in love with the two? This seems to be the theme explored by director Jérôme Bonnell, in A trois, on y va (literally "Three together, let's go") ("All About them") (三人行)(2015) directed co-written by him with Maël Piriou.
A trois, on y va is a light comical look at the complicated romantic and at times erotic dilemmas that can result when the three are mixed up in such a complex games of musical chair, given the law of Newtonian physics that a person can only be at one place at any particular point in time.