Is an eviction required in the event of domestic violence?

Question Details:

My boyfriend and I got into a horrible argument last night. I ended up slapping him very hard after he called me vulgar names, and he then attacked me - strangled, threw me, and slapped me, after proceeding to threaten me. He has been living at my house, which I own, for over a year and a half, and pays rent about 6 months in advance. However, we have no written lease. He has payed rent through next January. Am I legally allowed to kick him out if I am in fear for my life, or do I need to go through a formal eviction process? Important Notice