Unforgivable

I've been with my SO for 18 months now. I love him and I know we both aren't perfect but no matter what I always forgive him and we make up. Long story short I was angry about something and told him to back off and he refuses to talk to me after I apologized over and over (I wasn't feeling well) and he's done worse to me! He's cheated he has lied he yells and I always forgive. He's told his kids to not talk to me and said I may as well just leave. I'm hurt what do I do