Temporary long distance

So, my boyfriend of nine months is leaving today, he's an actor and got a summer stock gig that pays really well and I'm super happy and proud of him. But I've never done the long distance thing before. Luckily it's within driving distance, but because I work during the day and he'll be rehearsing in the evenings, it'll be difficult to see each other. It's for four months and I have no idea how to cope. Anyone have advice on how to get over jealousy (plenty of gorgeous actresses will be down there too), distance, and how empty my bed is going to feel without him?