Advice plz!! friends with benefits isnot talking to me?

we are both Military Police and both 21years old i am leaving in September for the AIr force Basic Training. We hungout all the time when i first met him for 5months then became friends with benefits and we Really liked eachother we cuddled, , and still was able to hangout as friends. he also showed PDA infront of ppl but...we got in a fight and didnt talk for 7months... We just starting talking about 2 weeks ago... we hungout at least 3times a week... He txted me everyday and we became friends with benefits again... But all of a sudden he isnt replying to my texts or anything hes ignoring my txts and i dnt know why... i wanna know. should i ask him? what should i say?