Hi (: Help !

hello girls. I'm Aimy and im 17 years old. Me and my boyfriend were dating for about 2 months before he left... we fell completley inlove.. he left on monday and since then i have recieved two phone calls.. he says that he has sent me a letter but that it might take a while to get here.. i want to send him a letter but i dont have the adress:( he is in south carolina . anyone might know what the adress is for the basic training base in south carloina? i miss him so much:(