Good performance, good production quality . even Plot is not that new, its same as most typical domestic relationship problems.
there are some drawbacks n little flaws but its ok because its early 2000 movie.
a jolly british girl marries her bf , which she likes him in start but later, the marriage is passionless, (especially sex n feelings). so later wife gets acquaintance her young sister ONE TIME bf, he is handsome also better job than husband. later she falls for him , and she fall hard. Even she sarcastically insulted husband at lunch or dinner about his job. thats really bad example of wife.
the affairs continues , but anyhow , cheating /adultery is bad thing , which this movie shows perfectly in the end.
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As the movie based in true story , i think its kinda little harsh but really good punishment , as Wife cheated and she actually feeds hate n violence in terms of imagination to her lover. so basically she is guilty. she could divorce husband n go for another guy . but early 90s , family dont want divorce so she stuck. british people..pfff.