How to deal with my girlfriend leaving for college..?

me and my girlfriend (yes im a ) have been togethor for almost two years we love eachother deeply and weve been threw hell and back and we manage to stick it threw. she left for college two weeks ago, but before she left we were inseparable.. we did everything togethor. i think it was selfish of her to leave me but i think its selfish of me to want her to stay and not fulfill her dream yu know... what should i do to deal with this situation?