Don’t wanna be friends no more

I’m 21F and I don’t wanna be friends with a male I’ve been friends with for 4+ years , I’ve gone tired of him and his ways . I would call him to rant or when I’m in distress he don’t answer and calls me when it benefits him, when we were in high school he used to stab me in my back constantly and violate me and my family then on top of that my personal life. He just argued with me today and saying “ hes friends with my opps “ and violating me and my partner . I have a lot on my plate and I feel very overwhelmed but don’t want anymore to know. I need advice to how to take this I genuinely feel like he’s gonna do something to draw people attention or something that’s gonna put me in harms way . Any advice?