My husband and I we have been together for 6 years now

He cheated on me all this year behind my back he had Snapchat that talking the girls all the time😩I find out he said he was doing only when we were mad to each other😔it was 5month ago until now Iam not the same I don’t like him anymore we have 3 kids together I don’t know what to do I just wanna leave him he said Iam not ganna do it again but I don’t trust him