"I've-gone-to-far-and-can't-come-back-"itis. 
This goes for 
books,                    Percy Jackson, Heroes of Olympus, Harry Potter, The Selection, and tons more
tv shows,                Once Upon A Time 
movies,                   Basically every movie that was originally a book, even the bad ones 
singers,                   Taylor Swift 
actors,                     Dylan O'Brien, Thomas Sangster, Josh Hutcherson, Emma Watson, etc 
bands,                     The Workday Release, 5 Seconds of Summer 
and 
yes, boy bands        One Direction, After Romeo