I saw a post on reddit at some point about a girl who wrote down other people's outfits and people suggested she might have autism. 

Something very similar happens to me. I feel as if my mind is genuinely incapable of grasping certain very basic concepts, usually in social contexts. For example I was thinking of how do people share something with others when it's unsolicited? Do they just... Say it with a normal tone? Do they expect sympathy? Is it normal? 

Anyway I'm not looking for an answer to those questions, but I have so many more about very normal social situations. My inability to understand doesn't simply feel as if i haven't heard of something before and so I don't know much of it, it's that feeling you had as a kid trying to grasp basic maths. It was easy, but you also just couldn't wrap your head around it if that makes sense. It's a very ethereal experience.

As a result, I feel as if I'm a completely abnormal person. I've never been able to share my feelings (I'm a quiet bpd, go figure...), I feel completely frozen, ice solid. Therapy isn't working too well because of this. I've never been able to understand social things too well either.

I'm going to bring this up with my therapist but I can't see her for a week and I'd really love to hear any thoughts or experiences on this. Maybe if it could be related to something else if not bpd so I can research it?