well... after reading thousands of Taiwan romance novel, which is a 2 hours read each book generally. I admit there are certain repetitive elements that I can guess, I love the feeling of guessing how the story goes. and still, there are tiny details that slip through my radar. So, I would have to say, no matter how repetitive romance novels are, I am sure there are still some details that readers could not guess it.

I thought Wingwing would going to say Literary are the ones that make me sleep.
I read the second page of Lord of The Rings, and fell asleep.