Part of the problem is that this book took itself a little too seriously. Hence, the author felt the need for like 3 or 4 afterwords.
I don't dispute that writing about adolescent gay love is important and touchy. Here, the protagonists were literally just 12 years old. And it was a pretty chaste romance, thankfully. (Because if we were reading about 12 year olds engaging in hardcore sexual activity, I'm pretty sure that's just child porn.) I don't know if the author was intentionally avoiding addressing the weightiest, most adult topics, because he was trying to keep the reader in the mindset of an adolescent.
This is a 2-week summer romance. While both boys have cell phones and the ability to text each other a lot, neither of them normally lives on the Oregon coast. The protagonist isn't even sure where he is going to be living the next year, because his parents were recently divorced and he had not yet decided which parent he was going to choose to live with. So, there is no chance that this relationship could truly last. The protagonist thinks to himself that a lot can happen in two weeks. That may be true, but from my adult perspective, I can usually feel two weeks slip through my fingers like sand. Usually, this is a two-week period in which I'm trying to remember to take my suits to the dry cleaners, and I never manage it.
The protagonist's father is not taking the divorce well (as it was not really his idea), and he is clearly showing signs of alcoholism. However, the word "alcoholism" is never used, not even briefly or in the protagonist's thoughts. His brain shies away from addressing the weighty adult topic.
That part actually is sort of realistic. When I was this age, I actually still was in such denial, I stopped myself from allowing the word "gay" to cross my mind. When I found myself admiring a guy's body, I would panic and try to convince myself that this must be a problem lots of people have, with hormones misfiring and finding the wrong gender attractive. I was convinced that it was some sort of mistake, a fluke that I could still fix because sexual attraction was so new.
Still, my adult perspective makes it difficult to take this summer romance seriously.
Realistically, the boys will text each other periodically for a few months, but one of them will meet a new guy at school who might be gay, and crush on him. One of them will possibly crush on a straight guy and have a painful, harlequin romance. One will decide he's sexually adventurous and give a random guy a blowjob in a bathroom, and when he proudly reports it to the other, the other will still have lingering feelings of jealousy and disgust, and then they'll stop talking.
It's also difficult to take the conceit of this book seriously. The boys decide to use the names of random seabirds as code for other words. This is just a hobby of theirs, and I don't begrudge them it. I just don't care. I know nothing about birds, I haven't seen any of the birds they're listing, and it's all meaningless drivel to me. What I find more curious is that each boy seems to have a few particular interests, but neither boy talks seriously about advanced schooling and careers or anything. Not even in the little kid sense of, "I'd like to be _______ when I grow up!"
The protagonist is into fashion, which I find cringe. He blithely tells his love interest to look at a dress and, "Imagine yourself wearing this, and how it would make you feel!" Okay, bitch. Not all gay men are into drag. And especially at this age, that should be a whole other conversation about one boy trying to explain to the other that he doesn't think he ever wants a sex-change operation, and no, he would never dress in drag, and isn't it kind of weird that gay men ever do that? Because, isn't the whole point that they're attracted to other men, so in the act of dressing like women, they're making themselves less attractive to their target audience?
The author bypassed all that.
He also gave our protagonist an interest in geology. Geology, fashion, and ornithology normally do NOT go together. He could major in each of those things in college, but there is no job that combines those things (other than maybe dressing Lady Gaga).
Then the author used those giant green cans of Arizona iced tea as somehow an indicator of gay, which was news to me. Am I supposed to be drinking those? Because I mostly just drink coffee and cream soda.
And, of course, the author never once used the word "gay." Or homosexual, or queer, or anything else. Presumably, this was an intentional choice because young people don't like labels. But by choosing to go that course, he once again bypassed all the truly adult topics.
Like, gay men fought and died in Stonewall riots for your rights, kid. There are activists fighting to this day to make sure that LGBTQIA folks have legal protections to prevent employers from firing them just for learning that the employee was gay. We have all these horrible stories about the allied forces leaving gay men in Nazi internment camps despite liberating the Jews, because they believed that we belonged there. We have been victims of lynchings and microaggressions alike.
But, the author doesn't want to talk about any of that. He just wants his "sweet" summer romance story. The backdrop of all the horrible things associated with being gay is just... ignored.