AITA (Fanfic writes)

Am I the asshole for going off on my sister because of her dating life?

(TVD; Elena Gilbert sibling)

I, 16 female/male/enby, recently found out that my older sister has been playing with two boys feelings.

My siblings and I recently lost our parents in a car accident. After a year of grieving we go back to school, and Elena immediately starts hooking up with the new boy, Stephen, despite the fact that her ex boyfriend, Matt, still has feelings for her and is trying to get back with her.

I supported her decision to end the relationship with Matt, but I became livid when I saw her on a date with him. I confronted her after her date and she admitted to dating both Stephen and Matt at the same time because she was confused and had feelings for both of them.

I've been in a relationship where my partner cheated on me and I know how bad it hurts. So this hit really close to home.

I lost it on her and demanded that she tell them the truth or I would. Elena yelled back at me and told me to mind my own business. It caught the attention of our aunt and brother who immediately tried to calm us down. I informed them of what Elena has been doing and my brother sided with me while my aunt sided with Elena.

I continued to demand that Elena tell Stephen and Matt everything or I would and my brother agreed with the ultimatum. My aunt disagrees and says that I should mind my own business and stay out of my sisters love life.

Elena said that I was a nosy asshole who should mind my own business, and I can't help but wonder if I was wrong to confront her and give her an ultimatum like that....so am I in the wrong here?