After watching this episode with subs, I guess it doesn't that bad. I guess most of people had different expectations about how and why YJ should act or coped with the situation. You all seems expect her to behave in certain way that more mature in her age and handled the situation here. She have right to act that way (even that is her fault for not let WH tell her the secret). But to me, after this hardship, she will be more mature.
Do we will have another tragic event after the beach date?? Because I read somewhere that YJ will amnesiac due to car crash or something like that. I hope it won't happen at least not after their beach date.