what should I do ?

okay , so this boy has a girlfriend that he soo off & on w/ but back in November he took my virginity & we been ducking ever since , but the whole time he had a girl . when I found out he said that he’s done w/ her and that he loves me all this & that . that if I talk to someone else he gonna beat them & me up , i want to be done w/ him I just don’t know how .