I found it interesting there were three concurrent mistress arcs playing out inside; aftermath (ML's parents), resolving (SFL's parents) and current (main couple). And, please - This is a drama, visuals, and details matter. The moment the main couple legally married, the second female lead became the mistress, and her role began.

With its ramped up vicious 'team second female lead' - Rape did nothing to move this story forward that a 'real-romantic-moment' wouldn't have done. Even, a drunken one-night-stand for the newlywed couple would have been easier to accept. The male lead does acknowledge he 'assaulted her' - Underwhelming, as that was.* Do notice, the word 'rape' was omitted (by the writer) and he didn't admit it to the female lead. Just, acquiesced an apology to his mistress and her toadies. This had all the elements for a crazy, socially dated, but fun character-driven series. But, that one moment of rape culture, voided it. Rape is not romance, and doesn't belong in the romance genre. Avoid.

*note: When responding to the second female lead and her minions screaming accusations of purposeful seduction for pregnancy:
FL: "I was sexually assaulted by him."
SFL & team: "minutes of FL shame throwing."
ML: "Pehn (SFL), I'm sorry." (underwhelming,)
[ep 23, 36:48]
(source; read; My Custom List "Rated One")