
This is the typical situation of a relationship with a cheater.
You should never tolerate cheating no matter how much you love the person. His conscience will eat him everytime he sees you, everytime you're being nice with him. With that, his conscience will take over the love he has for you.
I'm not saying Sebin is wrong here. I'm also not saying that Shinwoo is right.
What Shinwoo did is wrong and Sebin definitely did not deserve it. Tho I understand that these things happened because they both are trying to accept each other but they should always bear in mind that if they don't want to do things the other wants to, then they should communicate it with their partner.
I really hope there would be a timeskip and whoever still has the same feeling I hope for them to handle it maturely.
Fatheeer!!! I hate you all for making me cry. Also, i love all of you.