I've read the manwha "Shall We Have Dinner Tonight?" even before my kdrama addiction has started. So I was kind of hyped about this drama. Also Before Sunset is like one of my favorite movies of all time & I'm bringing this up, because the manwha reminded me of that quite a bit. I'm saying it confidently that the writers have butchered the magic of the original. The witty dialog & the bonding over food is almost completely missing from the drama. What's funny though that I did not even mind while watching the first half. Episodes 1-9~ were very entertaining for me with a lot of charm, it felt like I was watching a light hearted romcom, where even the exes were interesting in their own way. I hate love triangles, but while watching those early episodes I thought that with a story sequenced like this having more aggressive secondary love interests was perfectly fine.
Unfortunately the ratings were low & as customary with live filming, major changes were made. There are about 3 episodes where the focus is completely on Jung Jae Hyuk's (second ML)'s mental illness & not only that but our FL is also doing some incredibly stupid and frustrating things. Honestly at times I felt that the writer was just cruel to the audience.

The entire cast was great, perhaps the ML's performance is the weakest link. The OST is extremely repetitive, there was an episode where the the "Mokja nyan nyan" song was played like 6-7 times. The visuals were great, but nowadays that's true for all kdramas..

My suggestion is to keep watching until episode 11 & then just skip to episode 14 for the best experience.