The usual White nonsense about people unable to make sexual relationships work without endless whining about why. This, along with the inability to face the fact that not everyone in the world has the same emotional problems as Whites because White feelings are not universal.
The worst aspect of the writing here is that Whites see others as statistical averages rather than as individuals; in the desperate hope that people will actually fit stereotypes and, so, make it easier to relate to them.
Whites here do what they do best, talk about their love lives rather than actually live them. This is the very reason for the failure the film claims to be about, but is never dramatically explored in case the whole premise and execution appear to be nothing more than White whining.
Despite the contrivance of believing that people can change with little effort, this is a superficially-funny movie saved from obscurity by its highly-talented & charismatic performers – albeit one that is too long and with little to say about the Love the story avoids defining. (The French do these sex farces so much better than anyone else.)