(BIG SPOILER CUz Like this happened literally almost at the very end of the story)
The thing is Winston actually tried to be good to both of them even acknowledging the fact that he missed and wants to try all over again, realizing all of his mistakes and even trying hard to be liked by angie, while Yu-jin in my opinion only changed entirely when (SPOILER) Winston tried to kill himself together with his mother who made Yu-jin's life hellish, he set the entire house on fire. Yu-jin then told Winston to live and not miss the opportunity again to be with their new child.

I'm rating this based on the novel
Plot story: 6/10
Character development for
MC: 7.5/10
ML: 8/10
Angie my baby: 1000000/10 (she was legit the only character I liked)
Overall enjoyment:5/10
Remember guys I'm only doing this based on my opinion