What is particularly annoying is how he will often go on rants about why certain things suck in discussions with me, as if I am someone who agrees with him, when he knows (or should know) by now that I do not. One example is anime. He seems to have some weird vendetta against anime and has explained multiple times everything he thinks is wrong with it. I have never agreed with him or shared his sentiments, yet he talks to me as if we have established that anime sucks. He seems to think he can change everyone's mind by presenting a logical set of arguments. He seems to sometimes get pretty upset when people argue with him and refuse to yield. I usually avoid arguing, but I do not express agreement or tell him he is right. Perhaps he is trying to draw me into an argument so he can further reassure himself that he has persuaded me?

However, I should point out that although he used to be a bully and basically a caricature of a narcissist when he was in his teens, he has become a generally nice guy now, aside from this habit he has. He seems to genuinely care about me and about our relationship. This is part of why I can't just shut him out.