I hesitated some time to watch this because of all the bad reviews. But honestly, it wasn't as bad as people wanted to make me believe. Gong Yoo was wonderful as always and he can do no wrong. Well, except that I thought that his Kang Kyung Joon was a lot more immature than the real one after the change. Thank god, that changed later. But I just wasn't invested emotionally as I could have been, which is partially because I wasn't a big fan of Gil Da Ran. Most of the time she was a pushover, and Lee Min Jung acting was so over the top cute, especially at the beginning. I just couldn't connect with her and their love story. All the right ingredients were there, but it didn't mix well. Finally regarding the end, I don't get all the confusion about it. It was pretty clear, who was who and why. Yes, it could have been better and it was not enough time.