we went to a really small school (when i was in middle school there were like 15 students in the middle school and high school grades all combined, by the time i was in 12th there were 4 high school students all in different grades) so if i had to guess and give him the benefit of the doubt i'd guess that because we lived in such a small community and probably had a lot of mutual friends and connections, he probably just knew enough about me to know that i was into video games and my family was too poor to buy consoles/computers so i was still playing on a PS1 that my older siblings got for Christmas once while everyone else my age were on or moving to PS4 and (i think) Xbox One