Chwihyangi Wae Geurae

Su-Young, who is a premarital chastity advocate, is a rich third-generation chaebol. Although he faced many dangers(?) while growing up, Su-Young, who kept her beliefs, falls in love at first sight with Ha-Joon at a party one day after returning to Korea. He didn't intend to, but when he came to him senses, Su-Young found out that Ha-Joon had stolen him first love. Just as he was thinking about not only dating Ha-Joon but also marriage and children, the next morning, he comes face to face with an empty bed next to him. So he goes to Ha-Joon's university entrance and confidently shouts... "Me! I ate it, so take responsibility!" But what happened? Ha-Joon cleanly refuses, saying that being a chaebol is not him taste. Being rich is not him taste? What the heck is wrong with your tastes?!?!!

(Source: Bomtoon, translated)