Entangled with My Ex's Brother Ep. 9

In a past life, Beatrice was utterly betrayed. After being reborn, she publicly exposes her fiancé's hypocrisy and turns to collaborate with the wildest member of the Sterling family. "Shall we cooperate, Sebastian Sterling?" she proposes, only to be unexpectedly outmaneuvered. "I want to be your devoted ally!" From then on, the lofty heir of the Sterling family bows only to her...