Dumped the Scumbag, So I Married Him - Episode 12

When Lavinia is tricked into drinking tainted liquid by her fiancé Thaddeus’s female friend Ashley, Thaddeus cruelly takes Ashley’s side and betrays her. On their wedding day, Lavinia swaps the groom, exposes their conspiracy to steal her family’s wealth, brings them to justice, and embraces a new life with her true match.