I’m definitely not going to forgot what they did. It was disgusting and unforgivable. However, this is them before they did all that shit to him. Yes, she cheated on him due to a miscommunication which seems to always lead to that shit but the chemistry of these three and everything happening is in the past so we can’t really compare her past character as the character in the present.
Also, I believe we still have some shit to see that explains more about why she became such a bitch in the present
No
I think that just power went to her head + he did say that "they can do whatever they want", so I guess she thinks it's ok to abuse and rape her ex ONLY because he's a jerk and jealous....
in fact I hate rape, too many bad things result from rape :(
so we all just gonna forget about what they did to minho