I couldn't read more than a few chapters. I think one of the problems I had with the book was not being the target audience: what turned me off from the first pages might be typical chicklit - the little I am familiar with it:
* There are tidbits of physical descriptions in places that seemed awkward to me (for example, in a scene from the main character's PoV, there is a bit about bracelets on the best friend's "slightly plump wrist", which felt jarring to me - it seems both unnecessary for the reader to know this and just weird: it seems a detail one would notice about someone new, not someone so familiar as their best friend.)
* The physical descriptions tend to be casually and meanly unflattering for most women, which made me instantly dislike the main character who seems to be actively blaming and despising women for not being stylish, beautiful, young, or more like her. But the worst scene has to be one where one of the Lead Bitch's friends describes herself only to make a point how she is beautiful, but not as beautiful and attention-worthy as the main character, who is such a better person all around but not even aware of it u guise! This is parody-level awful.
* There is a LOT of praising of the main character's staggering amazing epicness. This bothered me in 3 ways. First, it's definitely overkill, bordering on Mary Sue levels of embarrassment. Then, it comes from all possible sources, requiring quick switches of PoV for no other reason than for someone to wax lyrical about this superwoman; I'm not a fan of this writing style. Plus, it stinks of lack of "show, don't tell": we just jump to a character who tells us how impressed with the main character they are. For example, not only are the students are floored by her amazingness, but this is described in excruciating paragraphs which completely overshadow the very little we got of her class that created this reaction.
* The leads meet and instantly kiss and it's The Best Ever. Not literally bumping into each other and taking advantage of it in a moment of lust. No, they meet and exchange a few non-noteworthy lines, then verbalize an overwhelming urge to kiss each other, I assume because they are just so hot, so they do kiss and it is amazing (of course) and the previously bicurious (I'm being generous here) teenager is instantly floored by The Best Kiss of Her Life. Then she is dragged away due to Lesbian Ex Drama by her cousin. Boringly, this is just in time for the sad attempt at conflict to be created ("Oh noes, I've kissed my student/teacher! Now we will be attracted to each other, but there is a line we cannot cross.") but before it can become TOO much for this book ("Crap, I had sex with a stranger and she is my underage student. What now?")
Those specific caveats aside, the writing is just all-around bad and I can't remember one scene or even one line I liked. I read a lot of lesbian fiction, including YA books, but this one has nothing going for it. Nothing at all. You can read better fanfics out there.