I think it means that Whoever is singing is talking to a girl. He' cares for her and she is apparently being difficult or treating him bad at this point. He saying dont let me down again cause somedqay shell need a friend and if she treats him like this he will not be their for her.
I think it means that Whoever is singing is talking to a girl. He' cares for her and she is apparently being difficult or treating him bad at this point. He saying dont let me down again cause somedqay shell need a friend and if she treats him like this he will not be their for her.