It's silly how much I could relate to Cath, especially compared to my own 19-year-old self, having just moved away from home. I never wrote fanfiction, but I sure as hell read it, and I was so painfully clumsy and awkward and anxious, socially. I still am, some days, but I have managed to develop into a (mostly) functioning adult, somehow.
I'd read Carry On before this, so that helped in getting into the story, too. I did enjoy Rowell's writing style and characters as well, even though they weren't the best I've ever read. They were somehow real.