dinosaurs bc why not

weird moment of the day: ran into the boy i went on dates with last year. only like three, so not a boyfriend, but the only boy i've ever gone on dates with. it took me three weeks to realize i really did not want to date him, like, at all, wanted actively not to date him. so i told him that i didn't want to date him, but didn't really explain myself very well, but it's kind of hard to say I DON'T THINK YOU'RE A VERY QUALITY PERSON without sounding mean, especially when you're as bad at talking about feelings as I am. but that's last year.
I was sitting in the saint paul student center, computing, tumblring, because this is my life goddamnit, and he walked up to me and said something about how it would be strange if I was living on the saint paul campus again, and i said yeah, it would be, which is why i'm not, i was just there bc of asl. then I looked back down into my computer. I never took my headphones out.
why the hell did he talk to me?
I made it pretty clear that I don't like him. is this a normal part of human interaction that I'm failing at? my sense is that you don't talk to people with contexts like this. i have seen him around and purposely not talked to him before. I have purposely gone out of my way to for sure not talk to him.
anyway. hopefully I will never have to talk to him again, but I thought that last december so...yeah. that was weird today.