Add the tag infidelity please. PLEASE. This manga attempts to be "realistic," but it's strangely not. Once it seems to be more true-to-life, that plot thread is either abandoned or suddenly morphs into some drama-creating conflict.
I really despised the male lead. I had very little empathy for him. It wasn't even really the fact that he was cheating. It was the fact that he knows the MC is psychologically unstable yet CONTINUES to batter away at her mentally, often without realizing it. It's terrifying to read really, if you look into the implications.
IMHO, the situation she ends up in is only marginally better than her father's abuse, partially because of the extremity of it, and partially because she's already completely battered from the abuse.
I did like the use of time skips, and the growth of the MC's maturity. Yet it seemed as if as soon as the male lead was involved, she regressed, further suggesting the mental number he has done on her. It was like a bad horror romance film without the dripping blood and gore.
The girlfriend, eh. I think the mangaka tried to give her some depth and not just make her the psycho-possessive girlfriend, but she failed. Almost miserably. It's one thing to be desperate. It's another to insist on psychologically torturing the MC. At more than one point, I wanted the MC to give up on the asshole and just let the girlfriend and the bastard stay together.
Though, her mother is a close contestant for the most hated character. Only appears in like one or two chapters yet thoroughly managed to piss me off. I really wanted the MC to tell her off.
Anyway, I'm supposed to give a review-ish thing, so I'll say this. Unless you have a lot of free time that you don't mind being taken by annoying melodrama, skip this.
It's really not that great.