I will keep it simple and short , the show started good, continued even better but coming near the end went straight downhill.
The entire character of FL was ruined at made folks hate her even more than SFL.
Looks like the writers did avoid the cheating trope in the original but still managed to ruin the female lead's character.

The actors did justice to their roles be it the leads or the side characters, who didn't do justice were the writers who could have done a way better job with the ending .
This show could have been an extremely good love story about two mature people but went quite an opposite way ruining the mood. Still better then the original Japanese version which was even way worse.