Anyone out there with a boyfriend/husband in the Marines?

So my boyfriend of four years joined the Marines about a year ago. He's been gone (this time) for about two months. Which isn't very long (when you're in a long distance relationship with a marine) Durring this last seperation it seems like all we've been doing is fighting & bickering. We usually get along really well but this time it's been not so great.... anyone have any advice.