You catch Yangyang on his job he hasn't told you about. Though the relationship wasn't official, both are torn.

You're a subscriber to Cryptid, Yang's youtube channel and may believe anything he says (the sky is purple and the clouds are actually made from alien farts, trust me).

Yang is trampled by Jisung when he wanders onto an seemingly abandoned basketball court in search of a ghost. Yang makes Jisung join him on his ghost hunt as an apology.

But I must explain to you how all this mistaken idea of reprobating pleasure and extolling pain arose.

One of your best friends has rented Yangyang as a boyfriend and is consistently crossing boundaries. Upset, your friend starts hurling insults. You run into them when Yang says "You're proof that even God has a sense of humor." This leads to a misunderstanding that Yang isn't a very nice person. Maybe things escalate and hands are thrown and your character is caught in the crossfire.

For some reason, your character decides to rent Yangyang. Maybe to get back at an ex? To prove your parents wrong (or embarrass them)? Or maybe you just need a pretty arm candy for the night. Either way, Yangyang is there to serve.

Alternatively: You hire Yang to pretend to be your fiance in front of your very judgemental parents. However, you and Yangyang can't seem to get on the same wavelength.

You and Yangyang were starting to get closer and possibly make it official. Just when Yangyang decided this was his last job and that he was going to come clean, you catch him on the job with his arms wrapped around another person. To make things worse, he acts like he has no idea who you are.