What you should do depends entirely upon your (both his and yours) commitment to this relationship. Long distance relationships are extremely difficult, I'm not going to lie. It's so easy to blame him (my husband was in the military for 10 years) for every little thing that goes wrong in the house or imagine that he's having the time of his life while you're home dealing with flat tires, leaky faucets and kids (in my case). If I had a dime for every time I said "if I have to do this entirely on my own, what do I need you for?" neither one of us would have had to work the rest of our lives. Thankfully by the time we had kids, his deployments were relatively short and infrequent, however they came at really bad times. I just given birth to our daughter two weeks before and our son was ill. He came home from work to pack, leaving for 6 weeks with no notice. When his enlistment was up, he was offered a DOD job doing the same thing in civilian life as he was in the military, the money would have been fantastic, but he would have had the same issues that your bf is dealing with now, sure he gets 2 months at home (out of 12) but no one guaranteed that it would be any length of time in a row.

The one thing you have to realize is that your happiness depends upon you, you're responsible for it, not him. The advantage to this job is that in theory you can live anywhere you want once this lease is up.