Some new feelings are discovered, and some relationships begin to take a turn for the better. But just when things are looking up, the Green-Eyed Monster rears its ugly head to ruin everything.
Back in the present, Ki-tae and Jang-mi have been on their knees for quite some time in front of Grandma, who upbraids them for lying about being engaged. Jang-mi tries to explain that she understands how Ki-tae feels about wanting to be alone, after experiencing his family. Jang-mi insists that she used him too, because her parents were so happy after meeting him and their relationship improved. Awww, seeing them sticking up for each other is sweet.
They even argue over who has to tell his mother and face her wrath, and Grandma just rolls her eyes and grins. She makes some cryptic remarks about them not being ready to come clean, and that it can wait.
Hoon-dong picks up Hyun-hee with his mother in tow, and they stop at a restaurant where his mom says Hyun-hee is pregnant and her parents are gone so someone should take care of her. But when they get inside, Hyun-hee jumps like a cat when she sees one of the waitresses, and tries to use her morning sickness to get herself out of there. Ki-tae and Jang-mi sit in awkward silence at his place, unsure what to say now that it all seems to be over.
Ki-tae grumbles that he still has to see her because Yeo-reum is still living with him. Yeo-reum shows up and offers to make dinner at home for the three of them, since he needs to talk to Ki-tae.
Jang-mi trails after Yeo-reum in the kitchen, offering to help, while Ki-tae trails after her, grouching and getting in the way. Ki-tae says he can cook too, and Yeo-reum proposes a cooking contest to see who can make the better pasta dish out of ramyun. Loser grants the winner a wish. Yeo-reum definitely knows his way around a kitchen, but Ki-tae is a hot mess. Jang-mi lining up a loooong line of beer shots, HAHA.
The guys play mook-jji-bba, a rock-paper-scissors game with tougher rules, and proceed to get staggering drunk. Yeo-reum wins again and tries to claim his wish, but Ki-tae now insists on best three out of five, at least until he passes out gracefully.
Next they head to a noraebang, where the machine will declare a clear winner and loser. But it backfires on Ki-tae when Yeo-reum turns out to be a great singer no surprise there, ha and Jang-mi gets all googly-eyed at his pretty voice.
Ki-tae turns off the music and sings an upbeat song, and soon the competition is forgotten as the three of them have a great time singing and dancing together. But this time Hoon-dong actually looks conflicted and swears he just needs time to think. The whole conversation is made hilarious by Hoon-dong side-eyeing the both of them, still thinking Ki-tae is gay and crushing on Yeo-reum. Jang-mi and Hyun-hee are on their very best work behavior, as executives of the store are there doing inspections, until Jang-mi notices a very familiar-looking pink diamond ring on the hand of a shopper.
Mom and Mistress see each other and both visibly start, and Mom turns to go but Mistress asks her snidely if she needs her ring again. Finally Jang-mi invites the woman, with her best customer service smile, to shut up. But Jang-mi is all riled up now, and confronts Mistress for daring to insult the woman who is trying to keep her family together while Mistress destroys it. The two women grapple, and Jang-mi joins in with her own battle-cry: I hate kids like you.
She says they should cancel the wedding and return all the gifts, and Jang-mi breathes a sigh of relief and agrees. Okay, who knew Mom was so funny!
He really looks sincere, too — awww, sweet boy. Ki-tae and Dad drink together again to celebrate, and are pretty sloshed by the time Jang-mi comes home. And seriously, Ki-tae makes the cutest drunk faces ever. Hoon-dong mans up and meets Hyun-hee to talk, and he says that his mother is really suspicious of this whole situation your mom and everyone else, my friend.
To his credit, Hoon-dong looks very upset by this idea. Dad adorably snuggles up on Mom, who protests but allows it. Neither Ki-tae nor Jang-mi can sleep, both hyper-aware that the other is right in the next room. He begs her to let him stay, and she wonders where the guy who wanted to be alone went. Ki-tae wanders around the room commenting on her messiness, and finally puts on a CD and sits in her bed, oh-so-casually asking why she was hovering near her door.
She thanks Ki-tae for making it happen, and he runs with the moment and tries to put an arm around her, only to get barked at to get out now.
She tries to get him up but he just pulls her in close, still fast asleep. Jang-mi wrestles herself free but stares at him, and tells his sleeping face that his mother called her daughter-in-law today and it made her excited.
She touches his hair gently, which rouses him enough that he pulls her in again. I must like you. They both bounce awake and try to deny anything happening, but Mom manages to drag Dad out, telling him that their fortunes make them drawn to each other. So funny how Ki-tae checks under the covers to make sure Jang-mi is dressed and his denials of anything happening are true, hee. Mom plays the solicitous mother-in-law at breakfast, giving Ki-tae all the choicest bits of meat, and he enjoys it as Jang-mi laughs at them.
Aw, they look like a real family. Ki-tae goes home to find Yeo-reum packed to move and gives him the money he promised, telling him to just take it since he won the bet. Being a smart man, Ki-tae goes shopping for proposal supplies. He spends all day decorating his place with candles, balloons, roses and lights, until his whole home is a romantic wonderland.
He remembers the first time he met Jang-mi, when she had decorated an entire hotel suite similarly, and smiles to himself. Mom admits that she originally thought so, but she believes now that their feelings are real. Mom is devastated and leaves without a word, and Se-ah drops her sympathetic expression so that we see the cold, calculating bitch underneath. Ki-tae calls Jang-mi to invite her to his place after she gets off work, and she agrees since she wants to talk to him too.
He gets busy lighting all the candles and finishes right as the doorbell rings. Jang-mi says that she needs to confess something, and tells him that she feels terrible because the parents think her marriage to Ki-tae is real.