The beauty of this entirely relatable film is that its credibility is absolute; this really could happen & probably does.
Blood ties & the family responsibility of an only son comes into conflict with his lustful love for a self-absorbed woman: a totally engaging "blood thicker than water" guessing game............right up to the final scenes! The hub around which the push-and-pull of allegiances dance backwards & forwards is the matriarchal mother whose subtlety of touch in human relationships is faultless & a joy to watch.
I suppose the affluent life styles of the wealthy middle classes are the same the world over but I was fascinated to be shown this Danish version, even though it's fictionalised.
If you've got this far then I know that you share my admiration of the films of modern World Cinema: this one is superb.