What do you think about someone who used to be friends with you on here.but changed their profile. And never message you again?

I used to be friends with this one user.who lives in India.on here. Then one day.you don't hear from them anymore never answered my messages nor message me.but once after his 16th birthday saying he has gotten to old for me.and he didn't think we should be friends anymore since he was. 16 .and I was 12..then I answered a post about how tall are you.by a user named beneath your throne.and I knew it was him.and he know I knew it was him..and he got mad and blocked me. Just because I asked him what happened to him.he called me geekzoid ? Whatever that is.? And he wasn't mad.that I was sad and to go away.I didn't mean to let others know who he was for real.I was just happy to see him back..guess he really was mad at me . we was friends since last summer. I thought we were.? I guess I was wrong and really don't know how to make friends.not on here or any where else.my understanding is poor.very poor.when it comes to people .especially friendship.I just don't understand friendship.if it even possible. Idk what friendship is.not with people.I have some on here that are true? I pray that they are..their the only human friends I have..maybe I take things seriously to much.to be true hoping for it to be real.but it's not.maybe I don't need any friends.not human ones.any way.