Should I break it off?

i think the best thing for you to do is to talk to him..let him know exactly how you feel and about your feelings about a long distance relationship. it does take a lot of work and if you dont feel like you can do it then you shouldnt put yourself in that position. if you want to move on you should leave him now not just go with someone while your with him because that wouldnt look right.. if you want to be with him until he leaves at least be prepared and understand that hes leaving and get it in your head that way you can be fully prepared when that day comes.. you know what they say if its meant to happen itll happen.. if things dont work out now you can always rekindle things when you gets back it thats what you guys still want.. hope i was of some help.. write back