Am I just a fling to him?

I've known this navy guy for a about 2 years now. Before he went to the navy, which was about 6 months ago, we hit it off good. We shared a lot in common, grew up the same, and he told me things that were very secretive to him. Before he left, we shared a night together and after that it was his time to go.I wrote him a couple of times while he was in boot camp and he would pass along to his mom or a friend that he was writing me back. Didn't get any letters though so I stopped writing. His mom gave me a picture of him, which I kept. About two weeks ago, he contacted me through Facebook. He said that he has been trying to contact me for a while through my old phone #, but never got through.Anyways we start talking on the phone and he would bring up how special I was to him and that the night we shared was special that he couldn't forget it. I thought he was talking about jus the sex, but he said that it was more of just waking up next to you, blah, blah, blah. AFter that point we texted every now and then. He would tell me that he was crazy about me and loved my mentality. So this weekend that passed, he came back home to see family and friends. He had plans to party and he invited me along. Friday, I texted him and got no response back until after he left a club. He claimed he didn't see me call or text. After the club he called back and I stopped over to where he was staying. No sex involved but just talked a little. Saturday he invited me to a bbq and that he would call me. So I didn't call him that day but waited for him. No call until about 9 pm, but that's when I texted him to see what was up. He told me he wanted to see me and wanted me to come so I did. I hit it off good with him and his friends once again. Later that night he asked if I could take him home. I dropped him off home and of course we talked a little but made out as well.Before making out though I asked if it was going to be another 6 months before I heard from him again. He said no and that he has been trying for that long to contact me. After making out I asked what he wanted me to do and he said he wanted me to just lay down with him. He wrapped his arms around me and I did the same, but he fell asleep. I kissed him on the forehead and told him I was leaving. It seemed like things went ok, but Sunday the day he was leaving for the airport he sent a text saying sorry about the hecky and I heard nothing from him after that. I didn't call him yesterday just to see if he would and to my surprise, got no call. I know he is in the navy and he doesn't have a lot of time, but do you think it's the navy life that is causing him not to let me know how he feels and not keep that contact, or am I just a hit a go when he needs it when he comes back home. He says all the right things and from talking to his close friends, he not the type to play a girl and hurt her feelings.