When you're with someone for a long time, they're bound to change and you're going to change. To work through those changes, you have to be willing to adapt to the situation.
My boyfriend and I have been through so many life changes and rites of passage together. We've had to adapt to graduating high school, university life, going into different professional programs, and now we're adapting to me working and him still in school.
The key is to evaluate your relationship at each point of change, see what you love about each other and what you're willing to give up in order to make this relationship work. As I mentioned in previous posts, I don't get to see my boyfriend too often but I've made the decision to sacrifice the time together now, so he can focus on school.
It's unrealistic to expect people and your relationships to always stay the same. If you want to make a relationship work, you have to be willing to work out a plan together and find a way to adapt to change that you both are happy with.
Have a great weekend!