The drama had a nice concept but the story was too thin for a full run drama even with the added side stories. It's also why they sneaked in a useless love pentagon that didn't get anywhere. Although you may find the FL's behavior passable as a teen but that wasn't the case as an adult, it was increasingly challenging to endure watching her. It simply didn't serve the narrative. After seeing her character in action I had a strong hunch to why they broke up. Such a reason may be valid when written adequately but, in this case, it came off as a shallow excuse to progress the plot. Even if we were... les resten.