My brother in law has testicular cancer and has started treatment for it. I will visit him soon. I am worried.

And my boyfriend has been showing psychotic symptoms. We arent sure what it is. We thought for a bit it could be schizophrenia... the other day the evil voice took over and he hurt me and tried to hurt himself so hes been in the mental hospital since then...

Im so stressed out and worried.

Idk if I should stay in the relationship even tho I really love him.