[tripzilch]

Yeah and you were rude anyway.

Here's some advice: There will be literally never, ever, be a situation in your life when it is okay or even remotely appropriate to tell somebody else that "they're autistic".

If you figure that someone is autistic just make the accommodation you notice they need, because if you don't you are in fact the one being demanding of them to do the work to make the social thing happen on account of two people.