What shuld i do in this situation? nobody else to ask?

ight so i was jumped awhile and said there will be a time where yu all wont be together and i garantee i will beat the s*** out of everyone of yu. and so i did and the guy said to me today that wen yur alone were gana cut yu. im gana be honest idk wtf to do. feel scared like any guy wuld and shuld be. how the hell do i deal wit this.my girl is freakin out and its makin me feel worse plz help