Heartbreak Library (2008)

both are about relationships that came to existence because of the meddlesome female leads (and they have deceiving *romantic* posters; they are way more emotional than romantic)

They both are nice lovestories. Rather simple and quite serious with deep and reasonable feelings.
Calm and cute developement of feelings towards one another.

Both of these films have an ethereal quality to them. They are both beautifully shot and include a little mystery. Both are quiet films...good for a rainy day and both star Lee Dong Wook.

Slow and gentle romance, a bookstore/library setting, slice-of-life focus and pacing, great cinematography with a focus on landscapes and the aesthetic of daily life, a mellow soundtrack with emotive stringed instruments.