Yu Se-Ha almost found MC secret in his house. Seeing him nervous, she tries to provoke him to find that secret.
In order to distract her he pushes her to his bed before kissing her.
MC and Milf Coach Bae Hyeon-Ju first sex in her house.
Mc is helping her to gain a confidence in herself as a woman.
She thought she was losing her womanly charm because she was getting old.