One last comment on the "flirting dynamic" (or the eww factor as some called it) I think that a group of gay men together (especially those in their late 20s/early 30s) can tend to feel, act and think like they are much younger than they are. Especially if they didn't get to truly "be teenagers" until their 20s due to that pesky closet. Add to that a mature, older looking teen, and he can feel more like a peer than a boy. That's why I never saw the flirting as a gross, pervy, hey little boy want some candy type thing.
Anyway, another good chapter, and recapping the nicknames really helped bring the characters into focus for me. With all the diversity, I hope you introduce a happy and healthy HIV+ character into this ideal world you've created. I loved your shout out in the previous chapter to PrEP.
I just looked up Brian Sims... yummy yummy. I wonder if he's read this. Maybe you should try to send his office a link to the story