Well, fam, this is where I tap out: 22%.
1) The character was taught to be a good girl, which means not embracing your sexuality.
insert snore here
2) The characters run the smut gamut in the first 2 chapters
3) Her room mate is annoying characterization of the roommate that says "whohoo" and calls you a slut
4) Long descriptions of her nun - like J-Crew and DKNY clothing. Or as they are known here in the midwest, sweaters. Shirts. All beige. All the time.
5.) Dialogue straight from a high-schoolers mouth to your page. "I do not, I just don't want to dress like a slut, I like these clothes." I don't have a great idea of the ages of these characters, but my thought is "Not old enough."
"But I was just pretending."
"Oh okay, so you were just pretending to get fucked in the ass."
6.) Internal monologue/conflict is awful, and becomes a thing due to a long lost douchebag from high school showing some interest in the heroine. He's cold and more buttoned up and he makes her heart go pitter patter too. But he's barely kissed her, let alone fucked her in the ass, so you know..whatever will she ever ever decide.
I don't think I need more reasons.