I have a signed lease, pay rent on time, but being harassed by landlord about how often my boyfriend is there, claiming I don't pay rent and threatened to put me out even came ti my apartment arguing with me and refusing to leave telling me it's her property and I can't make her leave, had to call the cops on her twice in one day, just moved there in October of 2013 can't afford to move right now till lease is up, don't want to seem unstable. What are my legal rights?