The song "Best Friend's Brother" by Victoria Justice tells the story of a girl who develops romantic feelings for her best friend's brother. She finds herself constantly thinking about him and questioning her actions and emotions. The lyrics depict her internal struggle as she wonders if it's wrong to have these feelings and if she should pursue a relationship with him. She hopes to have a chance to be alone with him but doesn't want her best friend to find out. The song highlights her attraction to him and how she can't get him out of her mind. Ultimately, she realizes that he is a dream but wishes he wasn't related to her best friend. The lyrics convey her desire for a romantic connection with her best friend's brother.