Where is he going to? Long distance can suck, but at least he's back within a year.
It's up to you. I was in the same position a year ago and my boyfriend and I decided to give it a shot anyway. We've been together for a while now and although long distance isn't great, we are very happy and it's working out very well.
It really depends on how YOU feel and, if you decide to continue the relationship, how much both of you are willing to invest in long distance.