AITAH for yelling at my cousin over a game
So me 12f and my cousin 13m we're at my brother's 21st birthday. And my cousin decided to use MY switch and MY game that I bought with MY money WITHOUT asking. Some context this game was already glitching on my switch and I was on the 2nd section of the game it had taken me 3 years to beat part one and half a year to get to where I was in part 2 so I did NOT want to loose this progress. Anyway my cousin had opened the game saw my save and decided , im not going to ask to go into the saves on the game that clearly isn't working and make a new world then swap mt world to world one, so HIS world the one that's been used once is saved to world one so it automatically opens to his world and I cant swap it anymore and my world the one that's taken over 3 years runs even worse than it was before (yes I still use my world to this day) I had walked over to him and he's just sitting there and I ask "oh whos account are you using for the game?" And he says "yours is didnt think it would matter" and I ask "where's my world?" And he goes "I changed it to world 2 because my world wasent running properly in the 2 spot" and I (raising my voice) say "so my world the one I've had for years and is a huge file is in spot 2 and crashing?" Then walked away and he apologized days after and we both forgot abt it until his mom brought it up at lunch last week and my cousins younger brother (a year younger than me) says "you were kind of an asshole to him back then" and I asked "how was I an asshole" and he says "it's just a game" my response was "yea that took years to get to where I was" then my cousins mom shut it down apologized for bringing it up and everything smoothed over, but now im overthinking so was i the asshole for yelling at him back then?