It's hard dating a guy that's in the military

Johancy
Hey so I've been talking to this awesome guy named Justin for a while now and within a few months he enrolled into the Army and we lost touch because he was in boot camp. After he graduated he then contacted me and told me how much he thought about me and how he is happy that I'm still around. During that time he was freaking trained but was allowed to use his phone. Me and him get along so great and every time we would talk over the phone we would always be laughing and it was always fun. We decided to finally meet in person when he came back home. We finally met and it was awesome, we shared our first kiss and he was a complete gentlemen. The only thing is that he tends to get distant when he is going through something, it happened once he became depressed at the base and didn't write me for two days. And now that he is home he has been arguing with his family a lot and now he is being super distant. Idk what to do he told me to give him time but I'm scared that he doesn't feel the same anymore, what do you guys think I should do. I really really care about him.