I think he might not be, for broad definitions of gay. ~10% of the population is out queer, and so so so many people are bigots who tell on themselves¹, oblivious weighted bisexuals², straight-in-name-only⁴, or pure spaghetti.

I propose using schoolyard bullies in therapeutic practice, to divert them from careers in law enforcement.

¹men without facial hair are tempting even me, patriarch of this church, to sin! Keep your beards up guys!

²of course I'm straight. I only have sex with my best friend when we're bored and stoned³ and have nothing else to do.

³Venn diagram with 'awake' and 'stoned' is a circle for this person. Best friend is same gender.

⁴I'm not queer. Nothing against it. Well yeah I was staring at your tits, you're beautiful. No, ain't got time for men in that way. Kissed a boy once in school,didn't see the point. Fourty years and I still haven't found a use for em. Yeah I've lived with my best friend for twenty years. describes committed affectionate lesbian relationship with lots of sex what's that got to do with anything?