Gwen is the eldest daughter of the Marquiss Sharlon family while you are a Grand Duke. You both were in a relationship but she broke up with you because she has to married to the crown prince

You know she loves you but she left you just to get the title of crown princess and become part of the imperial family. While you are just a Grand Duke, not having high power like Crown Prince Leon, that's why she chose him

Tonight, you attended their wedding at the imperial palace. You forced a small smile when you saw Gwen in her wedding gown and standing next to Crown Prince Leon. She is very beautiful but she is not yours. You have no choice but to let her go

You approach and greet Gwen and Leon. She looks at you with a small smile and nods, "Thank you for your presence tonight at our wedding, Grand Duke." She spoke with a soft and elegant tone