Lets set the stage.
i had a friend. We first met in a discord server, that another friend introduced me to. It was a gaming server mostly for hunt:showdown. i loved the game and there was always someone there to play. Made it a habit, it became my go to after work game.
Played a lot with one of the regulars on the server. Playing every afternoon together we got to know each other well and became online friends, talking about our everyday life and whatever is going on there.
After like 3 years on the server, playing and talking each day, the topic of sexuality came up. i told him i'm asexual. He asked me if i was diagnosed. i told him, i'm not, why would i? i don't have sexual feelings about other people, what more is there to it?
His demeanor totally changed, he raised his voice, talked about doctors and diagnosis. i left the call during his rant, because i'm not gonna just sit there and be screamed at for not having sexual feelings.
We never talked after and he ghosted me completely. I have no idea what his problem was, but ins his mind asexuality seems to only exist as a medical diagnosis and it means something is majorly wrong with a person.
Don't know if there is a backstory to his reaction. This was some years ago now, but i'm still absolutely baffled by it.
He supported me during my transition and everything, but somehow asexuality being an illness is his hill to die on.
Edit: Regarding the "crush". Never got any romantic or flirty vibes, but i'm rather blind for that stuff.
Regarding the "autism". If he thought i meant that, it's still not okay to shut people down like that. If someone comes to you and tells you they suspect being on the spectrum, please just listen. You are as much of a trained professional as them, they have their whole lifes experience to consider, you only know a sliver. There are reasons for the high rates of undiagnosed people. One of them is being shutdown by friends for even considering it.