An unhinged AO3 reader gives some tips to the author on writing gay fanfics.
I notice that this is your first fanfic, so I'll give you a few tips. First, you don't have to pretend you're a guy/gay/whatever! I know a lot of young female authors do this to feel more validated and to cover up when something anatomically incorrect happens in their fanfiction, or men don't talk like real men would, but I want to tell you that there's really nothing wrong with being just straight woman. You're fine likt that. And you're going to make mistakes sometimes. And then, as you develop as a writer, the mistakes will become less and less! (I also want to point out that this narrative is very harmful to us, real gay people. We are not some mask to be worn when convenient and then taken off later. Please think about it.)
Secondly: balls, balls, and more balls. Kissing the belly or behind the ears can be fun in lesbian or heterosexual sex, but men focus on the cock and balls. That's where all our pleasure is; we don't feel a warm feeling in our lower abdomen, a tingling in our stomach, or get weak legs. Licking and biting your nipples is nice, but not enough to make you scream or moan. You can also forget about fingering -- if you've had sex with more than one partner and are active, all you need is a little lubrication and you're good to go. Of course, don't forget condoms; no one wants STD. And on the non-sexual side, I can assure you that no one starts coming out by checking if their parents are okay with it. You either know they are, or you're keeping quiet. I also don't know why Adam would have such a hard time finding a gay club nearby? From what I understand, the fanfiction is set in modern times, so he should be able to find something at least somewhat LGBT-friendly close to home. On the other hand, his pickiness is also a bit strange, like sorry not sorry, but rules like "he's too young/too old" or "he's my friend's ex" don't work in the gay world :p. If a man wants to fuck, he'll even sleep with a young straight man with a wife and five kids. That's just the reality. We also don't watch series like heated rivalry or heartstopper, and we don't read yaoi. Those are things typically aimed at women, and the actors/characters are designed for a female audience. Gay men don't like delicate he/him waifus. Those are the most obvious mistakes I've noticed. We'll see how it goes in the second chapter :p