After 2years boyfriend is frustrating me..ignoring, not caring.?

We had a nice relationship :) we been through hard time when he was away (soldier) for 6months and we were fine, now he's living away finishing his master degree, and then next year we're moving in together :) and planning marriage in about 3years.

However since he moved away 1week ago we been arguing everyday...i get annoyed how when he's with friends he will NOT reply to my texts, or text at all. he will be out every night, and then have a go at me if i want him to talk to me one night on skype. he will go off with friends and not text or reply. and of course he's busy at lectures so that takes up a lot of time, so when he's free i would love to talk a bit, but yeah.

when we talked about it he said he feels like i dont want him going out, but i told him its not true i just feel he chooses his friends over me.

im the person that cant really go day or 2 without texting or talking but i feel like he could easily.

i text him cute texts, and get short reply back.

his excuse is 'ok it just happened.' 'oh i was sucked into it'

blah blah.

i cant talk to him without arguing..so i dont know what to do.

any tips?

i'm 20 and he's 22. i'm seeing him in 3days time for the weekend.