(I won't say any spoilers here, so you can read it freely)
White Valentine is a really traditional love story. Not only this, it's also a somewhat confusing movie. I don't know if it was because of the subs, but it got confusing in some parts.
This movie isn't very great since it really didn't have any climax. It's one of those movies you watch and when it ends, it makes you think "What? It's over already?". Yeah, and it has some unnecessary scenes, which makes its pace really slow...
It's strange because it doesn't really have a "main" story. I mean, there's a lot of short stories (by story, I mean the character's personal problems) gathered altogether, which really doesn't matter in the movie. This is why it's confusing, because it gets like this: The movie shows you about a little particular problem that one of the two main characters is having. And, even though it gets resolved, in the end this really didn't matter in the movie's main story!! These little problems are just there to confuse you!
And here's the most strange part: the movie's main story is actually all these "little personal problems" gathered together.
Well, but overall it's a good movie, thanks to the good acting of the main characters.
"Ok, so should I watch it or not?" I'd say, watch it only if you're a Jeon Ji Hyun fan, or if you're really a fan of traditional love stories. Even though I like both JJH and traditional love stories, it didn't really satisfy me. I'd still recommend Il Mare over this one. (for people who likes just love stories)
If you're going to watch this movie, the tip is: pay a lot of attention in the plot and the subs (or dubs, if it's your case).