My girlfriend and I have been dating for four years and we knew each other for four years prior to that. We've always been good friends and for the past three years, we have been separated by 200 miles. We try to see each other every other week but now that she's starting rotations in med school, we'll see each other about every other month for the next year. Our sex life has been rather dismal as of late and I try to chalk that up to work for me and school for her. Lately, I feel like we have become more of good friends who occasionally have sex than lovers. I'm not sure if this is one of those cyclical relationship things or a sign of the end. I'm sure someone else has been here and I'd appreciate some input.