I'm not diagnosed, but probably Aspergers/ASD (all my relatives think so). I haven't had any friends since college, so no one else knows me well enough to comment or really talk to me beyond the "Hello. How are you?" routine. My daughter and husband say I come off strange to those passing acquaintances, too.
I grew up in the 1970s, when there was no diagnosis for any ASD, especially for someone who was bright and verbal. I was considered gifted, shy, a loner, a bookworm, weird, and similar things. It was frequently commented that "she lives in her own little world". I was told that people were trying to make friends with me, but that I didn't respond. (In one particular case that I remember being told that, I had thought that I had had a nice conversation with that girl.) I was often told "You're too literal"/"Don't be so literal" and the ubiquitous "Look at me when I'm talking to you!".