It's after a long time I actually liked a romantic Kdrama. This was funny, emotional, intense and at the same time stupid. The story in the beginning is a gem, as it progressed it was predictable and frustrating. The one thing which saved this show and made me rate it so high was the acting, an absolute delight. It reminded me of the emotional intensity when I first watched CLOY, which I'm grateful that I could feel it again. I actually sobbed again which is a testament to how good some scenes actually are.
Do give it a try, it can be frustrating and stupid at times but surely watching the acting would flutter your heart. And most of it all is that this has a good ending.