Is AUTHOR wrong in the post ? POST : BACKGROUND: 
I am 13 and on an exchange trip with my school, in Germany. In the school we normally Josh around and call eachother names and steal each others stuff but then give it back, but everyone seems cool with it. 

C=kid    F1=friend 1  F2=friend 2    M=me

STORY:
Today, we went to a mountain to climb up, it's a  high mountain but has safe places. The mountain also has ruins at the top. We had some free time so me and my friends go to the ruins. C sits down on some ruins and puts down his bag. I think it would be funny to steal his bag and put it somewhere safe. I take his bag and he runs after me. (Remember we are just kids, I thought we were playing) I lose him and hide the bag on a safe ledge that is quite large and isn't over the edge of the mountain. He shouts at me. Someone else steals bag and then friends take it in turns to run with it. Gets to a friend who then loses C and hides it somewhere hidden. C cannot find his bag and shouts at us. He then finds the bag. We go back down towards the meeting place. 

C: GIVE ME €10 FOR STRESS FEES *in serious tone*

M: no way! That's ridiculous, I didn't hide your bag there!

C:*shoves me while going down a steep path*

M:*shoves him back*

A fight ensues.

I go away to other friends after winning as he is crying.

After a while, F1, F2 and C come to where we are. 

F1: If you don't give C some money for stress, I'm going to tell, I'm going to tell!

M: No!

F2: alright then apologize!

I then refuse and we negotiate until we come to the agreement that he apologizes to me for pushing me and I apologize for the bag and the fight. I agree to apologize for the bag, but not the fight. They deny and threaten to go tell the teachers. I agree to their terms because I know the teachers will take the side of a crying child.

Some of my friends take my side, some take C's
AmITheAsshole?