Okay so i need answers fast please?

okay so um..... me and my friend were hanging out one night with her brother and her brothers friend and then around 1030 my friend got tired and went to bed and so i stayed up with her brother and her brothers friend and i don't no how it really happen but me and my friends brother friend started making out and then it happen the next night to and before this happen i dident really like him but i kinda do now but i don't really think he likes me......so like i don't really no what to do now and i don't want to be around him cause i don't want to get hurt if he is with another girl or if we start making out again so yah what should i do