When You Break Up With Someone

i could very well see myself spending the rest of my life with this girl, but at the same time, four years is a lot of time. i don't expect us to hook up again the second we graduate. I want to watch her life unfold and watch her inevitable, inevitable success come alive. While this will be a bit of a damper on the beginning of college, i know i'm going to have a blast. Ah, what you take on the situation? Any words of advice or encouragement? Thanks in advance.