I started this drama on a whim, and I'm mostly glad I did. It's a slow ride, but it does have its moments. The supporting characters' love stories were cute. The "will-they-won't-they" nature of the two stories was engaging enough to avoid being overshadowed by the rest of the drama.
The main romance got kind of bland, to be honest, and I wasn't really invested in it towards the end. Don't get me wrong. The relationship was cute, but maybe it's because the subplots in the last few episodes completely eclipsed their romance. It's hard to focus on the fluffy romance scenes when you get sucked into a captivating domestic abuse/murder/cover-up/family secret plot. I just lost interest in the mains' romance.
Probably wouldn't watch again, but it's a nice break from other outlandish dramas out there. I might consider rewatching if I ever want a break from ludicrous plot twists and unrealistic love polygons.

P.S. I do have to write a small appreciation to Lee Jae Wook for subverting my expectations in yet another drama. After the ML revealed his crush, I kept waiting for the "I secretly love the FL too" fake best friend reveal (like in so many other dramas), but he remained genuine to the end. Favorite character by far.