As a schizophrenic, I know that we can really freak people out, and we are no fun, and some of us can be dangerous, we say wierd uncomfortable things all of the time. My advice is just avoid him, and lie to him, don't let him know what you really think of him, although he probably already knows, make up excuses to leave, it's really not all that hard to get rid of us.
P.s. what does the pentagram mean? All I remember about the pentagram is from faces of death part three where some guys cut some guys head off after stabbing him about thirty times, they had a pentagram drawn on the bed in what appeared to be blood and they had candles lit. Your not going around cutting peoples heads off are you? Is there no universal meaning or use of the pentagram? Do people use it for different things or doeas it have different meanings to different people. It makes me a little nervous seeing it on here knowing that it is used in seriously gory decapitation rituals or whatever they had it drawn on that bed for, wanna shed a little light on that for me.