Love Insecurity

Nancy never believe in true love and never believe that love can last “till death tear us apart”. She always believes that one someone found another interesting person, they will just simply let go and move on. She is also a weak girl that tends to pretend to be strong and positive But what happens when someone finally show her that true love exists. Is he able to give her the amount of security she needs? Or will that just drain him up in a long run?