Ye Jun could tell that Azalea wasn't willing to give up without trying. And he didn't push her either. She needed to face this phase herself. He could warn her but couldn't possibly stop her.
Back in the living room, he couldn't find Jun Li Na which made his eyes to wander around trying to look for her. He thought he was the biggest idiot since when she came he wanted to ignore her but when his eyes can't find her, he's feeling jittery.
"Sis, where is bro?" Ye Jun questioned Xu Mey.
After eyeing him for a while she said, "I think upstairs." She knew who he was asking for and that's why she gave the answer he was looking for.
Without wasting any time, Ye Jun went upstairs. All of a sudden, the door of the guest room opened and he was pulled inside. Before he could react, the door was closed behind him and he heard a 'click' indicating that the door was locked.