I have known him a little for a while in a group.
I thought he had a thing for me a few months ago when I caught him looking at me I looked away.
Recently he came and sat next to me really tight up against me. He passed me something in the table then ignored me and not others. The sitting like that annoyed me and caused huge sexual tension. He kept moving around back and I could see him at one point in my peripheral vision staring at me.
The next time I saw him he was very happy. Twice I moved seats and twice he tried to sit next to me again. He barely looked at me when he did he smiled.
I wasn't interested in anyone in that way. I am worried that his invading my personal space is a bad sign. I had an exh who spent years post separation torment me.