Funny, engaging characters-- good writing-- and then it fell apart a little at the end, for me. Carter and Arizona have a really believable, deep, long-term friendship that suddenly turns romantic. Okay, fine. But their knowledge of each other then seems to break down and they start misunderstanding each other. Again, fine, because sex changes things. But then the plot shifts: Carter behaves (correctly) according to his knowledge of Ari and she *totally* doesn't get it. I mean, her character suddenly lies down and closes her eyes and has *no clue* how he's feeling or what motivated him or how her behavior might affect him. I'm being vague to avoid spoilers here, but she behaves very badly at the end and I think the book squanders some of that deep connection and sympathy for them that it set up. Too bad, because the writing is strong and there's lots to like here.