I Once Loved You, It Makes Me Sad Just Thinking About It

After the heroine Chu Xiaoxiao's boyfriend Chen Linjie of five years proposed, he sold her out to his partner Rong Jue, who was the son of the heroine's stepfather. Chu Xiaoxiao, who was frustrated with her boyfriend's behavior, slowly developed feelings for Rong Jue. The two violated "ethics" and finally came together...