"Sweet & Sour" could have been a better movie but sadly everything that makes it good is packed into the last 15 minutes. If "Got emm" was a movie, this would be it, but don't waste your time trying to guess what will happen. Sadly the twist at the end is the payoff for enduring the rest of the movie, which was a struggle for me. The majority of this movie is about a bad relationship, but we don't get a chance to really fall in love with the couple or the characters first so it was hard to care and not just be frustrated at the repetitive problems and fights. It honestly felt like a waste of actors that I normally really like and that's the most disappointing part.

I am a fan of Chae Soo Bin (since I am not a Robot), but I felt cheated out of getting the chance to actually get to like Da Eun. In the beginning her weirdness is interesting but once the story focuses on the relationship everything is about Jang Hyuk's new job and changing perspective and as much as I like Jang Ki Yong he is not likable in this role at all. Yes, both actors do a decent job with showing a "realistic" relationship but they don't have the chemistry nor are they interesting enough to keep the story engaging. Krystal as Bo Young is meant to add some exciting rivalry and chemistry to the story but her performance was too one note for me. In this case the character seemed better written than acted out. She wasn't horrible but I was far from impressed.

The one high rating I have for this drama is rewatch -ability. Once I saw the end I wanted to watch it all again from the beginning with a new perspective. Unfortunately, the majority of the movie would still be mediocre. The retro synth music makes it even cheesier. Also, it's really hard to make scenes interesting when so many of them require reading text messages.

Overall I get why this movie would be popular and highly recommended but that doesn't mean it's good. There are certain things that are never explained (like why was the mysterious wingman constantly messed with the lights lol) and too many work is sooo hard scenes, but by the end I didn't regret watching it and could appreciate the writing more, plus I'm curious about the book it's based on. Maybe if this was a drama instead we could have gotten to know and like the characters enough to make the plot have a stronger impact but this movie felt like it was rushed AND like it dragged simultaneously. With a title like Sweet & Sour I expected this to be less bland.
Still, maybe with different expectations, this movie may suit your taste. I'd prefer more spice!