I miss my girlfriend. What are some good hobbes to keep myself busy?

My girlfriend is a German exchange student. We love each other a lot and I'm planning to visit her in little under a year, and in two years she is moving here. I know that our relationship is fine..but she is leaving for Germany tomorrow. I live in Oregon and she has already been in Washington DC for a week. I miss her so much I can hardly even take care of myself. I find that I'm forgetting to eat or socialize with my friends. What are some things I can do to keep myself busy?