beta
...again they aren't talking and just acting out of hurt.
Hurt people hurt people and they are both hurting from each other and hurting each other because unrequited love is driving them crazy.
He KNEW saying that would hurt Seo-In and it did.
This going to be a long arc of them hurting each other and being being hurt both emotionally and physically.
And it's all over a miscommunication of what they want from each other (love), what they expect from each other (friendship, pain, sex), and what they need from each other (a long hard talk about the past and present and unconditional love).
This is going to hurt. Which sucks. Because if they just TALKED they could fix almost everything.