wtf is going on..

ok so it's been a month since the guy i was dating (not officially) left for college. we did fine this month its just for some reason now he's like barely contacting me. he will text me once in awhile that he misses me and if we talk on the phone it'll only be for a little, he says his classes are insanely hard and he also plays soccer... its just that ik he goes out on the weekends and drinks a lot. and i feel like since i never get mad at him for not texting me, he's taking advantage of it. and he's coming home to see me next weekend i would think he'd wanna talk to me more? i am def not having sex with him when he does come out because i'm not just a pussy he can have when he's home. we already have before he left. he has told me he sees a future for us and has strong feelings for me... however i don't trust him at all. i have a feeling he's prob getting with other girls (he technically can we aren't official) but like how long is he gonna make me wait? what should i address with him next weekend when i see him? i cannot wait until May when he graduates. that is just too much stress. i want a relationship. also, i sent him fun vids of myself to him just to spice things up, and like he really didn't react that much. he was kinda drunk but it was just a little upsetting. i hate how this is making me feel. i'd feel better if he was my bf. its not fair to me. right? or am i being unreasonable? i already told him i wanted to take a break from talking, and he got upset and said that we shouldn't. so idk what the hell is going on. please help me.