They obviously are divorced. It's the foreshadowing in ch. 37: "you can't change the outcome without changing the cause of your most fundamental characteristic." Yu qi thought making coco's father attend the anniversary night would change coco's family's fate, but it won't work since she can't change that coco's father is a cheater in the first place; and that's what makes him and his wife get into a conflict that lead into their divorce.