I've been at my job for 3 years now and in personal and professional conversation, my worker continually interrupts me. Not just me, it's everyone. Usually, someone will start to speak and after about 2 seconds, he will interrupt. Not always about the same subject, sometimes he will just spark into a completely different topic. There's professional conversations that have to happen and we literally sit next to each other. Always thought that's just how his brain works or he's got a different communication style...
Recently, I started just literally talking louder and not stopping when he interrupts. It usually leads to both of us talking for 1-2 seconds... sometimes he will stop/slow-down and sometimes he just keeps going almost ignoring what I'm saying. I feel crazy and I feel like everyone else at work notices. I asked him to just stop interrupting me but when I brought this up to a friend, they said that's an asshole move (didn't work btw). Am I an asshole?