I have to admit that I watched this story because of Lee Jong Suk, even though I didn't like his character, not because it wasn't well-acted but because I didn't like the character's personality. The story is interesting for being different, but the main couple was despicable; in the end, they showed zero respect or remorse towards their respective partners. Lee Jong Suk's character deserves to end up crying in the end for being unscrupulous. The only sympathy I feel is for her husband's character. I felt so bad for him that I even felt like crying when he found out about her infidelity.

Those who say it was true love that she and the other guy "fell in love" at the same time don't know what true love is. They barely knew each other, they only had sexual attraction, which comes from mere infatuation. Their hormones were just stirred up, nothing more. True love was what her husband felt for her, sacrificing his career to be by her side, getting teary-eyed at the mere thought of her possibly dying, staying with her in the hospital to keep her company, and marrying her knowing she was sick, not every man would do that. Her husband knew how to truly love, but in the end, his wife paid him with disrespect and cruelty.

Wife about to die so she has given up on any human Morals because she already know she will go to Hell so why not one more Sin