Nah, it wasn't. I have read smut. 

 Isabella Snow:

novel was a smut. dark sexy male lead fantasy.

Wow, I'm just starting the novel and I realised that She is transmigrated from modern era to Fl's body and then she traveled back in FL's younger body? Drama didn't include this.

Anoif:

I also think that they made the romance a little too cliche and rosy in the drama…. I think the ML’s redemption and the development of the plot in the novel was more logical. I mean, why wouldn’t the FL leave? I feel that in the drama (and actually in the novel as well to some extent) they kinda failed to address how the FL feels. It’s partially because they toned down the whole ML’s character. But I actually thought the ML in the novel felt more like a real person, like with flaws and just like every human being. and it was perfect that there was a scene whereby she asked to leave, to go home because she was tired….. I think that is a natural human response…. The FL in the drama just became someone who is hopelessly in love with the ML although it was an arranged marriage? That’s super random. I don’t know, was kinda weird for me because I completed the novel way before the drama ended and I actually think the novel was more relatable.

A hard Disagree.. I'm almost at 100 chapter and they have been married for almost 2 years.. She lived with her now family after transmigration for 2 years only and whatever information she had about ML was indirect. One would question does she not watch her husband? Is dreams override her ability to see present? Where does such infatuation come for family but even up to chapter 100 she is yet to show any feelings for him at all? I kind of despise her.