Should I be his friend after he hurt me?

Well, if you really do care about him as a person, I would suggest that you take a break from communication from him. Maybe you could be friends later in life but I don't think that it's good for you guys to be friends right now because think about it...in your mind are you guys really friends?or is he your "ex" that you are trying to hold on to? If he is the latter, then I suggest that you let him go and move on because if that's the case, you guys can't really be friends. Hope this helps :)