How do I end a lease?

Someone please help me. I just moved in with my bf a few months ago but I regret it. He’s been so mean to me when he drinks saying he hates me and even tells everyone that. He talks so horrible about me on social media and I just found out awhile ago. Earlier today we were just at a hang out with his friends and he was so drunk I had to tell him to stop and let’s go home already but he caused a scene in front of everyone saying why am I like this and that everyone was laughing at me during brunch saying I’m a joke but I feel like he made that up because of how drunk he was. He is so mean to me when he drinks and I feel like everyone speaks the truth when their drunk. I just want to end it and move on. I can’t be with him anymore. He will never and we have had this conversation many times since covid started.