I own my house. My live-in boyfriend of 4 years needs to leave for my safety. How can I get him out?

So in most jurisdictions, an uninvited guest or person who has no legal claim on property ownership or on the title deed can only be removed from that residence by the owner filing an unlawful detainer action. You should tell him that if he does not leave voluntarily, then you will be forced to file an unlawful detainer action, and he most likely will not be able to get a lease b/c an eviction action would go on his credit report. You should retain counsel in your state for representation.