Why does he always talk about that moment?

well i met my crush in a book shop and i asked him about a book(as i thought he does accounts as well when he does sciences)and whenever we hang around wih each other....he always talks about that day...he will be saying to me A girl came up to me and asked me do you know where can i find this book n stuff....why does he doo that and you guys wont believe it i met him in november so its been 6 months