“Every couple needs a break up to become a better couple” which is a quote from the comment section of a manga I read and I feel like it describes this show perfectly, no matter who’s fault it was, at the end of the show Seo joon and Ji woo came out as an even better couple then what the start from. From learning what they actually want but never said to becoming more expressive, they needed some time away from each other to actually understand how much they need and love each other.