For context, I have a psychotic disorder, I'm not just "guessing".

When I do something unrelated to him, he thinks it's about him, throws a temper tantrum and I leave before he can physically hurt me. This is the most devious and disgusting thing to do to a person with a psychotic disorder. It will all explode in my head at some point despite years of stability. But he doesn't care.. he only seems to care about himself. Once I took some juice out of the fridge and asked him if he wants to share, and he lost his shit how I'm bullying him and how he feels victimized by me. Then I left and I could literally hear him jumping and screaming how I'm insane and provoking him. This has happened many times.. he is an intense hypochondriac and complains about "feeling like he might get a fever" all day every day. He goes to doctor after doctor even when they tell him everything's alright. I mean, I don't know if you can get psychosis at 70, maybe it's dementia?