Naeun becomes Siwoo's little bitch. Her master orders her around anywhere, anytime whether it be the in the classroom, in the streets, in the restroom. He explores his slave's exhibitionist kinks and fucks in the restroom at Christmas eve.
After having sex in the public bathroom, the couple go home. While Ji-Kyung's making dinner, A very horny Tae-Hyun pounces on her. While he was changing positions, he thrusted his dick into the wrong hole & took her anal virginity.
Bumsu calls Do-hoon to do some volunteer work at the church. When the former gets there, he finds his wife chitchatting with Do-hoon and senses that they've gotten closer. He later leaves them alone at the church thinking that his former high school mate wouldn't try to anything funny to his wife. Do-hoon gropes Hyuna and tries to seduce her but she isn't moved at all and leaves him. She goes back to her husband who's been waiting for long in his car, she asks him to take them somewhere nice on the weekend, but he doesn't wanna, and calls her selfish. That was the last nail on the coffin for Hyuna who's fed up with her husband's mistreatment (she recalls a memory where she caught her husband cheating on her). She storms out of his car and returns to the church in tears hoping Do-hoon is still there. When she finds him, she asks him to continue where they left off.