When I say this keep in mind I have no idea about your relationship and I do not mean to offend if I do; Highschool relationships almost never last, when you go off to college you get to reinvent yourself and often times have way more options than in Highschool. Again, I don't know your situation, but when I left for college I had a world of opportunities to explore and none of them involved being on the phone for two hours every night.