what do i do

okay so help. my boyfriend (ex now) cheated on me with a girl and i don't know what to do. i love him so much and he wants to get back together but this also isn't the first time. so do i go back or do i leave. let me tell you. we were really happy together and had great times. but i am scared to get hurt again. HELP, i want to go back but i don't at the same time. what do i do. 😒