Betrayed by My Ex Saved by the Boss

At her wedding, designer Emily's drunk fiance calls the wrong name, exposing his affair with her best friend. She throws down the ring. Billionaire Adrian poses as a broke nobody to save her; they elope.

She "keeps" her poor husband. Blacklisted by her ex, she vows to rise in Adrian's group-only to find the titan is her soup-noodle husband.