She put a line, stating that the two only had a business relationship. At this, Kim Ji Min said, "Our Kuk Ju has a weak heart. Honestly, I'm worried as her unnie that she might get hurt by Sleepy."
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Lee Kuk Ju added, "That's why I personally am stressing the business relationship. Seeing as how we would be together, I'm being affectionate toward him and Sleepy is extremely considerate. I don't want to get hurt because of a one-sided love." Aww, looks like she's trying to distance herself because she's worried she'll fall for him!