First, thank you for the shout-out...and I'm flattered that my writing inspired this excellent piece of yours.
Just one comment about the concept of gay buttsex -- some of us gay men identify as (the term we've begun to coin as) "sides," meaning we enjoy a variety of male/male sexuality activity WITH THE EXCEPTION OF anal penetration.
It's also called "outercourse." Gay sides have an informal mantra of brotherhood amongst our subcommunity: "side sex [outercourse] *IS* real sex, too."