Come Rain Come Shine (2011)

Both have the same male main lead and both were love story.

Zhang Jing Yi is the FL in both. The chemistry is natural. The relationship had depth. However, BEITD does not have a satisfactory ending.

In both movies, the story between the main leads develops mostly without words.
Although in Waiting in the Dark they come to understand each other and become in sync while in Come rain, Come Shine their feelings are expressed without dialogue and they reach the viewer rather than each other, both movies express love on a sensory, unspoken level.