I was walking around the campus about a month ago when I noticed my girlfriend bullying a disabled 12 year old. He had Down's Syndrome, so she was calling him names and hitting him in the head and shit. I was so pissed at her that I just went up to her and asked the child to go and report it to the principal and the next moment I just said that I was done with the relationship and walked off. What makes me ask if i am the asshole is that she apologized a couple of times and said that the boy was apparently "acting" to have Down's Syndrome. I highly doubt that he's acting, but still. AITA?


P.S. We are both 13 and in 8th Grade. 