AITAH for wanting to try alcohol?

Hi I'm 20 and my girlfriend is 19. For some context, my girlfriends family has a history of addictions, including herself (not alcohol or drugs)

My girlfriend and I have been together for 2 and a half and when we first started dating we were on the same page about substance usage. We both agreed that it's not something that we want to try ever.

It's been a lot of time since then and recently i've been curious to try it because i've never tried or been drunk before, and honestly it seems kinda fun. Now my girlfriend is really bad with change, i know this, but it feels wrong not to tell her about changes like this so i told her the other day that i was curious about trying alcohol. she got quiet and muted her mic (we were on facetime) and after a couple minutes she started freaking out kind of? she asked me if i was an alcoholic and i said no cus i only tried it once when my brother gave me some like a year ago. she went on a ranr about how anyone who drinks or does drugs will become addicted. she has a brother who shes very close with who is severely addicted to smoking and she kept comparing me to him and her friend who started out not wanting to smoke but is now addicted. I tried to reassure her and explain that it is possible to drink casually and that i'd be responsible and only do it around close friends and family, and i told her that no matter what i would never put her in a situation where ahe has to take care od me when i'm drunk but she still doesnt like it.

Since then we've been talking normally but she often "jokes" about me becoming an alcoholic, but they're never reqlly jokes she says them like insults. i tell her every time that i'm not an alcoholic and she just says "yeah, not yet." and it pisses me off because i'm already deemed an alcoholic before i can even try it. i feel like she's being a little unfair but i can understand that she has some trauma linked to substance usage. so am i the asshole for wanting to try?