The time had come, graduation was over with. College awaited the couple, but with the idea of college also came... planning. Both were into their respective hobbies as they'd passed through high school together. Maud likes rocks; the boy, now man, still obsessed over whatever it is he obsessed over.
Boulder wasn't really paying attention, seeing as how he doesn't have ears.
However, with their interests so far from each other in terms of education, it was only time before they would have to split naturally. Or... attempt the fabled long-distance relationship.
Seeing as how both still care for each other, it's rightfully obvious they would try it out.
Boulder was none too pleased with this outcome, but he had grown used to this by now. As Boulder is a rock and rocks will outlive the tyranny of humanity.