YMMV / Shatter Me

• Broken Base: The Purple Prose narration, particularly in the first book. One side is completely driven up the wall with how over-the-top abstract it gets; the other like or at least tolerates it because it's a stylistic choice indicative of Juliette's character.
• Cliché Storm: The plot itself could be copy-pasted from your typical YA novel: there's a dystopian government opposed by plucky rebels who place all their hopes in a young teen with special powers. Said teen is also caught in a Love Triangle. Nothing particularly new is done with these plot points either; the series' main focus and strength is instead on Juliette's Character Development.
• Narm Charm: Whether the prose is more 'narm' or more 'charm' depends on which camp you fall into, but even those who like it can admit it's a bit ridiculous. However, it serves its purpose in giving Juliette a truly unique voice, so one might find that it grows on you after a while.
• Romantic Plot Tumor: The "X-Men rebels fighting against the dystopian government" plotline is mostly overshadowed by the "Juliette, Adam and Warner are in a Love Triangle" plotline in the first three books.