Is it normal to be depressed when I'm apart from my boyfriend?

My boyfriend and I have been dating for several months, and we're very much in love. We met in Boone, where we both go to college (and where neither of us currently live). Now that we're out for summer, we both went home--100 miles away. Unfortunately, with gas prices and my work schedule, I can't go see him but once a month, if we're lucky, and now he's going away to work at a summer camp, so we won't be able to see each other at all until mid-August (today's the 2nd of June, in case it doesn't get recorded). Is it normal for me to be depressed because I don't get to see him for that long, even though we just saw each other yesterday (for probably the last time until August)? Also, is there anything I can do about it? He can't even have his cell at camp, I'm afraid I won't even be able to talk to him. His parents don't want to come get him on the weekends he has off, and he has no car. Please help :(