When the Coffee Was Cold, He Handed over the Wedding Invitation

Su Wan worked as Gu Chen's secretary for three years and also loved him for three years. When she finally decided to give up, Gu Chen handed over a wedding invitation - the bride was not her. The coffee is cold and the heart is also cold. She chose to leave, but she didn't know that Gu Chen also hid an unknown secret in his heart. When the truth is revealed, can they find their former love?