I do prefer one on one conversations, but, like you, I have problems connecting with people even with the same interests, this is of course after I overcome the first stage of approaching people and initiate a talk. I noticed this pattern with people I talk to: people get interested in me quickly, but then discovered something and become disinterested.

People like to have "fun" or to relax or to take it easy. I don't know how to do that. I'm intense and anxious all the time, and talk about topics that don't interest most people when out (I don't know what to talk about otherwise). Also, I tend to focus on the topics more than on people. I'm usually task-oriented.

I don't know anyone on the spectrum. I guess I haven't met one because I haven't clicked with any one I met.