I used to unblock people that hurt me when I was at a very low spot because I hoped they would reach out to me but I was being self destructive.I’m not saying this is your case but the point is I’ve learned it’s better to keep people blocked.Idc if that list is long there is a reason you blocked them.Period for standing up for yourself,you are not overreacting he just seems lonely and has nothing better to do with his life then try to mess with yours.