I can't think of another well-made and realistic depiction of borderline personality disorder in men more convincing than this one. It's like a psychiatry textbook classic case. And while the disorder has been frequently shown in films, it's been almost exclusively a female role.
And who can fit as a male patient of BPD more than the charming Yankovsky. Charismatic, flirtatious, energetic, impulsive, feeling lonely in groups with multiple intense interpersonal relationships, unstable self-image, risk-taking behaviour with potential self harm, episodes of intense mood swings and neediness. Almost all scenes are eloquently illustrative and diagnostic..The typical hysterical peformance when he fell to the ground to avoid being abandoned by his young lover..the moment he held his kid assuring his paternity to himself...All were fabulously performed by Yankovsky. The skillful director together with Yankovsky's superb talent and unmatched acting skills must have been supplemented by observation of multiple examples of the disorder .. Didn't he once say how he watched his cat staring at him and slowly closing his eyes carefully in order to put a similar scene in one of his upcoming films...A good actor ,just like a good doctor, must be a good observer.