I read several reviews of this movie before deciding to watch it (Thank God for subtitles) and they were all over the place so I went in with no expectations. I was told of Annie Liu and that this was a decent romantic comedy.
The gist of the story is that there are two couples, one an older couple and one a younger couple. Each couple is plagued by sexual problems leading to extramarital affairs that come back to haunt them in different ways but at the end of the movie all is well with the couples (although the final couple of minutes are a little on the corny side).
The acting isn't bad. There are some scenes where it looks contrived. The dialogue (as depicted in the English subtitles) isn't bad either. If there is one thing to complain about is that later in the movie they use flashbacks to fill in scenes from earlier in the movie. The problem being that the user didn't realize anything was left out of the first scene, although the flashback adds perspective.
On the whole I found the movie enjoyable, nothing cringeworthy about the acting or dialogue, but nothing award winning either. The female cast is attractive which helps make the affairs believable and the plot is easy to follow, albeit predictable in places.
Possible Spoiler Alert: One bit of warning, if you are hoping to watch this movie to see some hardcore sex scenes, pass it by. There's very little nudity (about 30 seconds of Jacquelin Ch'ng's breasts), just a lot of suggested sex. In fact, the movie would have been just as good if half of them were left out as they did nothing for the plot.