It was more sexually explicit than most YAs I've read. Not a negative or a particular positive but unexpected I guess. 
 I've seen a lot of reviews that harp on this book because of the cheating. And I do partially agree. Cheating is bad and I don't condone Will's actions but I do think that it did serve a purpose towards the authors goals. One of the biggest things about bisexuality is the erasure it faces. So many people doubt that it's even possible and the validity of a bisexual's feelings is often questioned. And I think that by portraying Will as liking them at the same time it gets drilled into the reader that people can like both boys AND girls. For example if he had dated Brandy and they broke up and then he moved on to Angus it leaves room for people to interpret it as "he was really gay all along". Which still wouldn't actually do anything to denounce his 'bi status' but could be interpreted as such by those in doubt of the validity of bisexuality. I think for the hard to convince simply crushing on Angus and Brandy in a love triangle scenario would have only brought up the stereotype that bi people are just confused and unsure about their sexuality. 
 The flipside of the cheating scenario is that it plays on two other bi stereotypes. The 'bi people are greedy' one and the 'bi people will cheat on you one'. Both very gross stereotypes yet undoubtedly Will fits them. While I can choose to interpret it as Will is a cheater and considers himself to be greedy and is also bisexual (all true but separate) I know that less forgiving people will fail to distinguish a difference. 
 That all being said I am disappointed that the word bisexual was left out of the text. The afterword by the author was kind of nice but it would have been even nicer to see some of what was said there IN the actual text. 
 The story overall kept me reading and wondering what was going to happen to this kid but the ending left a lot to be desired. 
 I think if anything this book could open a lot of discussion about bisexuality.