Ooo Oxeye, Happy (slightly late) Birthday!
Thank you o lovely people of the tearoom. Over-explaining is one of my faults, so in the spirit of true faultiness I shall explain more. 
My brain has one setting for 'friend'. For me, there is no acquaintance, no 'casual light friendship'. There is only Friend. It doesn't have any idea what 'enemy' is, either. Sometimes friends are scary for a while because I don't understand what's going on. My brain cannot make them seem like enemies, though. Those who are vaguely interested should have a google of Williams Syndrome www.williams-syndrome.org/teacher/information-for-teachers#5 , because female autism can be a bit like that sub-set of the spectrum...overly sociable rather than antisocial. (I've been very very carefully trained on confidentiality, though, because of many years of work in domestic violence and child protection spheres and the work I do for the government, of course. But those are simple rules on what information is shareable and what isn't, and in what settings.)
Friendships, though...to me people ARE friends. Some are friends I don't know very well, some are friends I know a lot about. Because I had so many years with only one friend and absolutely no idea how to make friendships with others, all my friendships are like a miracle to me. People are so precious to me.
Getting friendships right has to be a question of rules for me, because my brain runs on rules rather than instinct. It doesn't have instinct. That bit got left out of the design.
If the rules go wrong and something unexpected happens, I panic. I can't help it. It's not a neuroticism, it's an inbuilt unstoppable response to rule-failures (lots of very good research out there about this now). With friendships, my brain can't think about more than one person at once very accurately. So if one person does something unexplained, it 'feel's like every friend I have has done something unexplained.
What happens is 'end of the world thinking'. "Something has gone wrong - everything has gone wrong - it'll never be ok again - I have done something terrible - oh hell I don't even know what it is!" (See Dean Beadles lovely explanations of "egg whisk thinking" and autism.) It's a heck of a thing to live with, but it's temporary.
What helps is people being clear about what they are doing. And about what works and what doesn't for them. I can manage a lot of different instructions (er, once I know who the person is ) but I don't instinctively know what to do or not do. It's nothing to do with stopping them from making their own choices, and everything to do with trying to do my best for them as a friend.
Anyway, 
available.