I'm not exactly sure what part you're referring to or if you want to know word for word what they said because I don't know that at the top of my head, but basically, after Wutt missed his dinner date with Ja because he was working with Sun, his mom laid into him when he got home and completely innocently he replies, "Nope, Ja and I didn't have any plans to meet." The mom reminds him of their reservation at the Japanese restaurant and how Ja waited forever but he never showed up. Wutt checked his phone and saw that he did have missed calls from her. He called her just as his mom asked him if he was with Sun and he said yes. Then his mom told him he should stay away from her or something to that effect, to which Wutt said, "Without Sun, I wouldn't be where I am today (or I wouldn't be here today)," and of course Ja heard all that and realized how important Sun was to Wutt, so the next night she showed up at his workplace. Feeling like an extra person, Sun left. During dinner, Ja asked him if he even wanted to marry her, and Wutt looks at her.
Meanwhile, Sun had been called by Wutt's mom. Sun shows up at their house where the mom explains that this is Wutt's place/area of the house, and Sun replied that she knew that because she's eaten dinner with Wutt and Ja here before. Then the mom said it was going to become Wutt and Ja's bridal house and that she kept telling Wutt to redecorate the place so that it looks like Ja's home, too, but he never did. At first the mom thought it was because he was too busy, but she now realizes it was because of Sun. Sun started to say that his mom got it all wrong, but Wutt's mom interrupted her saying that her son loves Sun but that it will never work out between them, that they're all wrong for each other because Sun could never make him happy. Sun looks all stunned and the mom goes on to say that it's because Sun's a successful career woman and men don't like women who are more successful than them, that they can't live with being inferior to their woman. She told her that their love will never last and eventually they'll end up going their separate ways because of it. Then she told Sun that she's not blaming her or criticizing her. It's because she's been through it herself so she knows. She had always been more successful than Wutt's dad, but she thought love would hold them together. In the end, he left her anyway, so she didn't want the same thing to happen to Sun and Wutt. During this whole story, Sun is crying because some of her own fears surfaced and were validated by Wutt's mom's own experience.
Later, Wutt returns and tells his mom he's not marrying Ja. His mom tells him he is and that Sun will no longer be a part of his life. He was like what are you talking about? And his mom tells her that she had a talk with Sun and Sun had agreed to leave him alone. Wutt asked her what she said to Sun and then he left to go to Sun's place. He called Sun, but she told him she was out on a date. He asked her what his mom said to her, but Sun didn't really answer him (or I can't remember if she did). She just told him that from now on Wutt should never come see her again.
The next day, Wutt's mom calls Ja and her dad to come over to their house to get Wutt and Ja officially engaged. Wutt gets really mad and leaves. He shows up at Sun's workplace to talk to her again and Sun pretty much repeats that he shouldn't come see her and that they should get out of each other's lives and go their separate ways. Wutt doesn't give up, but he can't find or reach her, so he tracks down her friends and asks them if they know where Sun is. They say she's probably at work, and Wutt replied that Sun took a vacation. Then she must be at home, and Wutt replied, "She moved out." Her friends got really shocked and went to check. The receptionist said Sun informed them a few days ago that she was moving out. Jane came back and said it was true; all of Sun's things were gone.
Wutt goes home where his mom tells him the date has been settled. He packs up his things and leaves. He goes to that fateful place where he was "rejected" by Sun 5 years ago and leaves Sun a message that he loves her. He tells her he meant to keep that secret with him forever, but since Sun left him and he'll never see her again, he wants her to know that he loves her and that it has always been her. He also tells her that if he could redo things, he would. Sun goes outside for some fresh air, and it turns out she's at the same place Wutt is at because it holds a special place in both their hearts.
Meanwhile, Ja figured out that Wutt took off even though Wutt's mom tried to cover it up, and she wonders/worries what if Wutt doesn't come back in time for the engagement ceremony.
Sun and Wutt spend some time together, pretending reality didn't exist. Wutt repeats that he loves Sun, and Sun tells him she loves him, too. Wutt is happy about it until she reminds him that he's getting engaged tomorrow and that they can't run from reality...and I think it ends there. Sun may have added that Wutt needs to show up at his engagement ceremony, or that line could have been said in the previews lol.
Sorry if my explanation is confusing or if scenes are mixed up. I'm going from memory. Only 2 more episodes until it ends (today's and next Tuesday's).
