Not bad, but quite disappointing. The movie builds up well, but then falls apart at the end. For the most part it was the story of a (potentially failed) relationship: the blissful courtship, the problem- free initial steps of living together, then the fraying at the edges as hitherto unseen flaws in the couples' characters are revealed, the frustration (why does she stay with him?), the intrigue (what will happen to them?).
Then...an incredibly random and perverse ending.
It was a good character study up until that strange conclusion, and went some way to answering the question "Why do beautiful, intelligent women go out with paranoid, controlling, obsessive-compulsive prudes?". Unfortunately the answer is not that flattering to these beautiful, intelligent women.
Decent performances from the two lead actors, Gustaf Skarsgaard and Anna Astrom. Astrom is incredibly beautiful.
Sadly the soundtrack does not include Pearl Jam's "Better Man" and Joe Jackson's "Is she really going out with him?" as these would have been highly appropriate.