I think an LTR with regular Skyping (or other video messaging so you still see each other. During Basic you'll have to stick with letters, calls are timed, and infrequent in Basic training. For a better, more in depth letter, write a little each day. After Basic, and any special training he may have to go through, you'll be able to contact each other when you're both free. Tell your boyfriend that I am thanking him in advance for his service. :-) and you...stay strong. Be proud of your armed services man. :-)