Was about to give up!

This episode was really nerve wracking for me. CSW's character was a total jerk from the first minute of this episode almost to the end and I just couldn't stand the way GHJ's character would not react to any of his mistreatments and carry on following him around. I was very, very tempted to give up the whole drama all together but luckily I held on as the story gets back to normal towards the end and in the following two episodes. Why do many Kdramas become so frustrating at one point?