please help, need relationship advice

R

this is my first relationship ever and is currently going for 8 months now. the thing is, my bf had to leave soon for bootcamp right when we got together. so- out of the 8 months. i've only saw him for three. we were so in love and so great, until the time he left. boot camp is 3 months and when he got back, we only met once out the week off break he had. he then continued training and got to use his phone. of course you would seem he would contact me, but he never did, and instead looked at my snapchats.

i sent him 1-2 snapchats and he replied and left quickly. i haven't talked to him for 3-5 months. the thing that upsets me the most was on my birthday, he never greeted me. all he does is look at my scs but never contacts me or talks to me. even now during the holidays he's at home ( i think) and isn't contacting me but still is looking at my posts on social media.

i want to talk to him about this so bad. but i don't know how as he never contacts me and i feel like he doesn't have the time for a decent conversation. other than that, i don't know what to do. i don't know what i should do with our relationship. please help ):