Communication problems

An

I have been in a relationship for a bit over a year. He is in the military and we only see each other on the weekends, but that is alright with me. He also gets deployed soon, which is also okay with me, because he really wants to go. But during the week we only communicate over texts and we don't really talk about anything important. It's always like Smalltalk, the important conversations are die out sooner than later. That annoys me. I want to be part of his life, but he doesn't really let me, because he doesn't talk to me about stuff that's going on. I love him but I don't know if I can keep up with that so long...