Wow wow wow. Adorable.
But I think I have a cavity.

Story (6.5):
This show was pretty much perfect for quite a ways. There was a great premise and set up, plenty of romantic drama and potential sabotages, media frenzies, fan greets, drama, romance, will they won't they... And then stuff calmed down.
And then the story went bonkers. I don't want to offend anyone, because the story is actually emotional and moving and it's not stupid or like I hate it, but it did change the tone of the drama. In my eyes, it broke up with most of the realism and down to earth maturity of the drama I'd felt to that point and got a new girlfriend called all the k-drama cliches you can think of.
I'm not going to lie, we saw some of this stuff coming from miles away and there are sooo soo many coincidences riddled throughout this drama, but as that ending kept going and oh wait another secret thing and okay that's convenient now that I think about it that's super coincidental... it's great but kicked me a bit out of starry eyed love into dispassionate appreciation mode. :)
I think if it had fewer episodes it would have been great. Either that or they need to change up their drama. Some of that stuff I was okay with but eventually I stopped caring all that much.
By far my favorite part of the plot was her undercover fangirling which also suffered a hit when the end drew near. I felt that particular storyline lacked full conclusion compared to other aspects. The last two episodes were twiddle my fingers candy. :D
Okay, enough criticism, now everything else is perfect.

Acting/Cast (10.0):
Park Min Young is (and has been) one of my favorite actresses (perhaps even my #1) and Kim Jae Wook is great in this drama. I was hesitant about the pairing at first and it's still not my favorite pairing (I much prefer Ji Chang Wook), but combined with their chemistry and Jae Wook's brilliant portrayal of a perfect boyfriend, you can't hate on this lead couple.
All of the other cast is very well done (yes even crazy director), but I think one of my favorites was the actress Kim Bo Ra who played Cindy. After watching this show, I realized I've seen her in a handful of other shows, most recently Ghostderella. I would honestly love to see a spin off show of her and that potential romantic interest at the end (not gonna spoil it guys). That would be such a fun show :D

Music (9.0):
That main opening song kept getting stuck in my head! I'd be going around thinking "All I want is you, all I want is you!" lol. There wasn't a whole lot else that stuck out, but there are other good songs throughout this show even down to the background music playing in the Cafe.

Rewatch Value (9.0):
There's such an assortment of fun and cute moments in this show, it's highly rewatchable. I'll admit, I'll probably stick to the first half, but don't put down the rest so easily.

Overall (8.5):
So overall, some mixed feelings; well over halfway, this completely topped What's Wrong With Secretary Kim (WWWSK), but as it kept going so much felt thrown on to keep the show going and also made the show lose some of it's credibility that it'd done so well holding to for awhile. We could see some of it coming for awhile, and I'd groaned a bit, but expected it... and then they just kept adding on... But if I'm really bored of a show I have trouble watching it, and that was not the case here. I watched every episode the day it came out... so yeah.
Compared to WWWSK they come up about even in my recollection, though this has the lead in the first half.
Recommend to all rom-com fans especially if you're sick of people who don't communicate and stop talking over minor mis-understandings and act like teenagers when they're in their 30s. This show is for you!