Is it normal for an acquaintance to pat your head?
Alright so to give some context, I've known this guy just over 8 years but we were never close or anything (went to the same schools).
We run into each other a lot at my university campus and he pats my head and says hi, usually when I'm sitting down (and/or staring at my phone) and because I'm short. He also strikes up a conversation which took me off guard (we've never held a conversation before).
I usually would get angry if someone did it but he was a former crush so you know ;)
So what does this all mean? I need to over analyse everything to reassure myself.