Narcissist or is it me?

I’ve been dating a guy off and on for 5 years. I’m going back and forth between believing he is a narcissist and thinking maybe I’m the narcissist. I feel like he’s always making everything about me and starting conflict purposely. I recently got so angry I went and took all my things from his apartment, we got in a huge fight. I ended up going back and he was nice to me, conversations were good and then tonight he flipped the switch again. I wish I could send the screen shots of our conversation to get an outside opinion on it. I know I’m not always the most reasonable or calm, certainly have immature and dumb moments. I’m not perfect. Ugh…. I need help understanding my situation.