To the young dude on the computer π» who I sat down next to: I DIDN'T sit next to you because I wanted to sit next to you, but because my computer froze and they assigned me to computer #2, so I had NO choice.
I didn't think about telling you this because I didn't think it was a big deal but then I noticed you were acting a little weird and then you moved a little bit, then you moved some more.
Maybe you thought I was gay or something (definitely not), but there's only ONE reason I sat there: because they assigned me. I had NO other choice.
I tell you this because I've had that experience myself as well where somebody has sat next to me even though there were plenty of other computers available and I thought it was creepy as well. So that's the answer anyways in case you ever read this.