He’s probably really excited about his military career, and he feels that he can count on you to be there for him during this long distance relationship, so he’s okay with things. The trick for [i]you[/i] is to find something meaningful to occupy your time when you’re not with him so that you can have a rich life while he’s away, as well as a happy romance. 😉 Focus on your career, your volunteer work, any school you attend — whatever commitment you want to make to yourself and your life will help you not be needy and lonely because he’s away, and it will support you while you’re in a long distance relationship.
Long distance relationships are tricky and their success requires both people to be independent, loyal and understanding. You’ve got the loyalty part down — now, see if you can work on being independent enough to balance your feelings. 😉