Moving away, will we last?

I think that so long as you both keep the communication going, there is a very good chance that you will stay together. It's very important that you talk to each other and plan times to see each other. You have to set goals, so that you both have things to look forward to. My similar experience? I joined the US Army, and things between my girlfriend and I didn't last. Why did our relationship fall apart? Because we didn't communicate enough, and when we did communicate, we had nothing to talk about. Rather, we had stuff to talk about, but neither of us could relate to each others experiences anymore. I hope that this helps you, and I hope you both the best.